Our Staff

Brittany Maxner

Performance Program Coordinator

Brittany organizes our performance team, does the accounting and scheduling for all of DME, as well as works side by side with Jennifer to run our in-house show series!

Brittany has been riding for 26 years.  She retired her Prix St. George dance partner Spider of 19 years together this past year and is currently working with Callie.  She is developing her up the dressage levels with coach and DME owner, Daisy Kosa.

Qualifications: EC Certified Instructor &  EC Rider Level 8

Jennifer Baic

Academy Program Coordinator

Jennifer wears many hats in the DME Academy, teaching the stable management program and lessons and organizing events and clinics. She is a proud “barn mom” to her daughter, who competes on the Silver Series and is the affectionately adopted barn mom to many of our riders. She has a passion for horse care, loves sharing this with her students, and is an avid supporter of the Equestrian Canada Rider Level program. She loves mentoring our young riders through their rider levels. 

After a long hiatus from riding in her teen years, Jennifer started taking lessons at the DME Academy in 2018. In early 2020 Jennifer purchased her horse Velvet, and they have been training and preparing to show in dressage. They are currently working on First Level skills and can often be seen riding in the DME In-House dressage shows. They will make their debut at Caledon Dressage in the 2023 season. 

Qualifications: EC Registered Instructor & EC Rider Level 6

Alesha Nimec

Head Instructor

Aleasha has been riding and working around horses for 30 years and has been teaching for 10+ of them. She also does more than just teach lessons, she also works as a registered veterinary technician since 2008.  Aleasha loves to share her knowledge with everyone she teaches, focusing on horse health and the foundation skills for riding for all ages.  When it comes to riding, she has tried many different disciplines, from Western pleasure, hunter/jumper to dressage.  You can see her competing in local and national barrel racing shows with her horse Alan for the past few years.  Beyond weekly lessons at DME, she also takes the off-property show team to the Hamilton Hunt Club and is the head facilitator of the EAL Program for team growth and leadership.

Aleasha also enjoys being part of her community by volunteering with the Binbrook Agricultural Society, Hamilton Hunt Club and other local events. 

“I love watching all my students grow, progress and fall in love with horses!”

Qualifications:  EC Certified Instructor

Patrick (Pat) Kosa

Senior Instructor

Pat has been riding since the age of 10. His passion is jumping and has competed extensively in the jumper ring. Patrick is an Early Childhood Educator and works as a supervisor for the YMCA.  He takes pride in helping students take their first steps in riding. Pat is passionate about teaching beginner jumpers and enjoys helping them develop their skills to become confident jumping students.

Gwen Cottle

Senior Instructor & Tack Coordinator

Gwen has been riding since she was 12 years old. The one lesson a week she begged her parents for quickly turned into two and participating in the local Pony Club, then part boarding and leasing and then eventually getting her own horse. Gwen grew up eventing and still loves the concept of combining the precision of dressage with the thrill of galloping over a cross-country course. After taking some time to focus on her career, Gwen is back in the saddle and now riding as a member of the Daisy Meadows Performance Team in dressage under the instruction of Daisy on her mount #Supersonic. Gwen loves helping new riders experience riding for the first time and hopes she can help all her students feel the joy that comes with developing a relationship with a horse!

Qualifications: EC Registered Instructor & EC Rider Level 6

Jemma Elsdon


Jemma started riding as a child and was obsessed with it. She was a hunter/jumper and dabbled in cross country, but her passion later in life turned to dressage. She bought her first dressage horse, Tiffany & Co., and =their proud moments grew over the years. Their greatest accomplishment together was trailering 18 hours to Aiken, South Carolina, where they trained and competed at the beautiful Stable View in the heart of horse country, SC. Her current equine partner is a 12-year-old unraced thoroughbred who is currently learning how to dance.

Fun fact: Jemma will never turn down Haribo gummies!

Qualifications: EC Certified Coach & EC Rider Level 6

Robin Holk


At the age of five, Robin’s mother enrolled her in a summer day camp for western riding, and right before the session, the discipline was changed to English. At the age of 11, her dad took her for an interview to be a student at a new stable close to home called Genns Equestrian Farms, where her main focus would become dressage. Many decades later, that same barn would now be called MJM. Robin has trained under many top-level coaches, such as Marina Genn, Diane Creech, Walter Zettle, Cindy Ishoy and Cara Whitham. Along with working in the main barn and back barn and teaching in the riding school, Robin is currently a member of the DME dressage team and training her horse, Victor, with Daisy to prepare for this year’s Caledon dressage shows.

Qualifications: EC Registered Instructor & EC Rider Level 6

Emily Dickson

Social Media DME Performance & Website

When she was seven, Emily fell in love with riding the first moment she stepped up into the saddle upon a friend’s horse. She’s grown up tackling Hunters/Jumpers before deciding she was passionate about Dressage. She’s developing her skills with DME owner and coach Daisy Kosa. And, of course, with her four-legged partner, Yoshi (#yoshidoodles). She is super passionate about social media, website design and everything Equestrian.

Fun fact: In her spare time, Emily writes fan-fiction!

Sarah Corbett

DME Groom

Sarah grew up doing trick riding and vaulting before being introduced to the world of dressage! She now competes at the Young rider level with her horse Sully, and last year became a part of the DME family. Currently, she trains with Daisy Kosa and Cindy Ishoy! She started working as a full-time groom in Florida in 2017 and now grooms for Daisy through the summer months. She takes her job very seriously and has completed courses in the Masterson Method, Equine Nutrition and Equine biosecurity. Sarah really enjoys helping people learn the ropes of good horse care!

DME Junior Instructors

Our Junior Instructors assist with our level 1 lessons. They help with tacking up, mounting, and are there during the lesson to offer assistance. All our Junior instructors are Academy riders that have ridden through the program!

Sydney Brown

Junior Instructor

Sydney has been riding at DME for four years! She currently has her EC Rider Level 3 and works in the DME academy as a junior instructor and camp counsellor. She’s currently training to add barn staff to her growing resume. You can find her spending her summer showing 2′ jumpers at the Hamilton Hunt!

Angelica Miski

Junior Instructor

Angelica has been riding at DME for three years! She currently rides Moose and Pumpkin, two of our lovely Academy horses. She showed her first cross-rail course in April and obtained her EC Rider Level 3 in March. She is working on achieving her level 4.

Angelica loves to share the joy of horses with kids!

Photos featured on this page were done by Platinum Image.