There is a horse riding club right here in town, just 5 minutes away from our house that we take her to. You'll notice in the picture that she has her coat on and looks bundled up. The lessons occur in a large barn but the barn is not really heated. She loves it all the same, though.
(It isn't extremely bright in there, so you'll have to excuse the graininess of the pictures.) When I took her for one of the lessons, I was kind of nervous, considering my horse-riding accident last spring. Watching her go around the fence without any help slowly built up my confidence in her.
Meanwhile, she goes on loving horses and still talking about a career centered around horses.