I agree 100% with Foxhunter. It doesn't look like you and your horse have just plain lunging down, so adding jumping into that is making it unpleasant for your hrose, for all the reasons Foxy said.
Once you get her to lunge more comfortable, and maybe if you used a lunge caveson, you might try setting up ground poles or cavalettin, on a circle radius (like spokes on a wheel), and then work her at trot over those. But with the line connected to the bit, and her pulling out like that, she is only learning to jump crooked, off balance, braced against the bit. All things you do not want to teach her.