The horse I was riding the other night ran out a few times of the jumps and really ran over my instructor she just got me to go over the jump a few times to make sure that it wouldn’t happen ahain when jumping a similar jump
Take increasingly wide concentric circles to the jump (I.E. take it straight on, then take it at 5 degrees, 10 degrees, etc). See at what point she’s becoming unsettled and put in the reps from there.
V poles or guide lines on the floor to keep straight
Practice doing trotting poles at angles and gradually raise them ? 🙂
You could try putting V poles either side of the jump to minimise her chances of running out 😄