But to get started with the jumps, you should putt small branches on the ground. Tear off all of the other branches, leaving only one. Don't use a pine branch, one that is rotting, or even one with spikes. If you can't find some branches, go to a lumber store and buy square wood pieces, that are long.Basicly, rectangles. Get her to cross them. DO NOT USE PLASTIC PIPES. If she would step on the plastic pipes, they would break and she would would hear the noises and all this and that, you'd probably hit something, and she could run away, and a big mean bear could get her. (( No pun intended at the start.))
A good idea for her to relax once in a while is if you have any veternarians around with horse pools and underwater treadmills. This really relaxes their leg and helps them get used to the water too.
If your horse isn't afraid of water, have her jump over some small puddles. Jump in them before, but make sure somebody is with you. Puddles can be sinkholes and you could die. Or live in mud for the rest of your life.

