I have just started a share for a 13.2hh welsh sec c, she is 6yrs old. Am an adult and share her with a 12 yr old girl. They haven't had her very long and she needs lots of schooling but the girl just wants to muck around and jump her which is why they have me now. She is ridden in a hackamore as she is very sensitive and always tosses her head when trotting. We think this is a bad habit as she was ridden by lots of children before they got her. I have been being firm and telling her no we don't do that. She has actually got abit better and doesn't do it as much and I make sure I have light hands and contact so not gabbing her. She also doesn't bend very well, say on a 20 mt circle she doesn't bend her neck very well. How can I work on this and improve her bending? She got abit stubborn after about 15 minutes today and decided she wouldn't trot and I couldn't get her to so I used the schooling whip for a bit. She trotted when asked but when I asked her to canter she bucked and this has happened before.
If anyone has some good advice please tell me! Also some good but simple schooling exercises I can do with her I would be very grateful.