2 Questions - My father wants to get rid of my mare because she's wild but . . .?

all the other advice already given is great! So take it all in, use that advice! But sometimes you have to come at a horse like that with a different approach. Read up about wild horse behavior. Bring yourself down to her level. Spend time with her by her stall, or where ever you keep her, don't go in with her or anything, just sit by the enclosure and mind your own business. Bring a book or something. Just let her watch you. She may get curious and come and sniff at you. But the key is, let her come to you!! Don't push her when she's not ready to be pushed! She has to know that you aren't a threat to her. Every horse is different. You can't expect all of them to respond the same way. Just show your dad how hard your willing to try to help this horse. You can't just tell him, you have to show him too. Once ur horse trusts you, keep yourself on the same level. Again make urself something that's not threatening to her (for example, move slowly, don't make too much sound, ect). And if you watch her closely, shell tell you how she feels. By the way she stands, where her ears are, her eyes. But don't forget that she is bigger than you, so you still can't let her walk all over u. She needs to know that ur the boss, but she needs to feel that she can trust you at the same time. Good luck! If you have any questions about my response, feel free to message me.