Wow, ditch that trainer. Look at 15 seconds where you're trying to 2 pt (? I think?) and the leg is waaaaaay back before you're even jumping. If this is what your trainer is telling you to do (as I understand you said, maybe I'm confused?) she doesn't know what she's doing. The last thing you want is that leg flying back and completely pitching you forward.
I have the most honest horse on earth and he'd do anything for me but I know instantly when my leg is slipping back because he'll run out on the jump for sure. It seems to be more out of concern that he thinks I'm losing my balance than him being naughty though. You can literally give him his pace, stay out of his way and he'll canter you thru an entire course perfectly with almost no steering as long as you are in a good position. That is the definition of hunter. Your trainer needs to read a little George Morris before passing on such misinformation to you!
Ps if I'm interpreting what you said wrong, please forgive me and don't take it personally, I just really think you deserve to be taught properly!