What I see.......
Ok....I see several things here. I am going to be as polite as possible BUT also honest at this critique because of the dangerous behavior I see here.
1. Your Seat - You don't have one. Sorry. You need to regroup your seat before you can safely tackle this mare's issues. LOTS of flat practice, walk, trot, barebacks! Probably not even on THIS horse, a safer one perhaps one that you're not going to be worried will throw you.
2. Your Hands - OWWIE! Talk about on her mouth! Quiet hands are essential with a problem horse. When your horse is rearing NEVER EVER kick and pull back at the same time!!! Your horse will eventually go up and over w' you. I know you said she was a previous bolter which is why an arena is your friend. When she rears GIVE her her head and push her forward w' your leg in ANY direction she chooses. Forward movement is what you're looking for. AS SOON as she goes forward a few steps STOP, PRAISE HER! Quit trying to "force" a ride out of her she is not ready for even a simple hack or jumps!
3. Jumps - DO NOT! This mare is hardly rideable on flat why are you jumping her? Not being mean and I don't really know much about jumping but it looks to me as you're not very confident with it yourself. I would not even consider jumping her until you've got her rearing and bucking fits stopped. Every time you landed you caught her HARD in the mouth AND the back.
A few other things I can suggest would be a good long lunge before riding so she can work her kinks out before you get on her. Why does she act like such a spaz while being tied?? I would possibly recommend getting her vetted and looked at hormonial issues. Maybe she needs some hormone treatments?? I am not there, I can't really offer up much more with out seeing her in person. Are you sure she doesn't have a sore back or mouth? Who trained her, how long has she been trained.
Please don't think we are picking on you, we're not. But as it looks right now this is dangerous. Please be careful.