Sweet, incredibly fit 21-year-old mare

With a heavy heart, but due to a lack of time and back problems, I am looking for a fantastic new home for my beautiful and very sweet mare (21 years old).
She is an incredibly fit and vital horse who still enjoys exercise and attention every day. In the past we had a great sport career together up to Medium dressage level. Nowadays she thoroughly enjoys her role as a wonderful leisure horse!

What makes her so wonderful?
-Incredibly fit & healthy: Despite her age, she has the energy and presence of a much younger horse.
-Social on hack: She goes out on hacks weekly and visibly enjoys it. She loves going out together with another horse, a walker or a cyclist.
-Fine dressage foundation: You can still notice her Medium background; she responds very well to the aids.
- Well-behaved and therefore very pleasant and easy to handle. Stands quietly and behaves well at the farrier, vet, etc. Easy to load on the trailer.

Honesty above all:
-Hacks: She likes leaving the yard, but always with a buddy (horse, walker or cyclist). She prefers not to leave the yard alone, so I am looking for someone who enjoys going out together.
-Workload capacity: In the past she suffered a stifle ligament injury. She currently has no trouble from this at all and has no ailments, but because of this she is no longer suitable for higher-level dressage or heavy strain. Recreational riding and light work, on the other hand, suit her excellently!
-Character & Rider requirements: She has a spirited, sensitive and forward-going character (especially when she is in season). Therefore she is not suitable for beginners, insecure or fearful riders. I am looking for an experienced, decisive and calm rider who knows how to handle a sensitive horse and gives her the right guidance.

What am I looking for for her?

I am looking for a 5-star home with a sweet, experienced and confident owner where she can enjoy plenty of turnout/paddock paradise, love and wonderful hacks or light work.
A good and forever home is my absolute top priority. The match between rider and horse is crucial.

Interested?

Do you think you are the experienced rider who can offer my mare a golden forever home? Feel free to send me a message with a short description of yourself and the place where she would live.
(Inspections allowed, costs for buyer. Dealers or riding schools need not apply.)