My new mare Rosie is eight and has always been ridden western. I ride english. What should I expect in transitioning her over to english? She is still green and hasn't had a lot of work done so she isn't even all that used to western tack, she has just never been ridden english. I will ride mainly bareback problably, but I want a saddle for Christmas(we have two western saddles but I don't know if eighter one will fit her). Thanks if you can help me!