I'm not amazing at critiques but I'll give it a bash :)
You seem a lot more relaxed in the older photos, which is understandable if you've had some time off and the mare rushes. If you relax more it may help stop the mare from rushing - you seem to be hanging onto her in the second to last picture, try slowing her more with your seat and rhythm - imagine the speed you want to go at, and try and slow your rises to match that and it should help slow her.
Your stirrups are right on your toes in the recent pictures as well, which can force your heels down - move them slightly backwards onto the ball of your foot. I would also drop the stirrups down one hole for the flat work, you seem a little perched on top of her, and it may help your stirrup iron position.
To relax her - remember to breathe! You seem a little on the defensive in the pictures, as if you are waiting for her to rush - keep your shoulder back and your chin up, relax your shoulders down and make sure you don't fuss too much with your hands.
I won't critique the jump, as it is not really my area - hope that helps!