Trouble with friends?

Your just having a typical teenage girl moment. The horse is yours, you deserve to be allowed to ride and your mom even offered for you to ride it! Because she can't find the time to work around your schedule then that's to bad for her. You need to keep practicing with your horse so you can jump him! Don't let her get in the way. And if she finds the time to ride him by all means let her, but don't dwell on it.