You and she look very, very nice. You strike me as a very solid rider and very focussed, too. There is an intensity of the way you are with her, and a bit of looking down goes with that. As you get more able to trust her and ride her from feel (which I bet you can do in your sleep!), you will not look down. yOu'd be surprised how much this simple thing will help to get her one inch more off her forehand.
she is by her Appy nature a downhill and long backed hrose. No way around that and I think you are riding her with that in mind , making very fair demands of her. The contact to her mouth sometimes looks a bit hard, but that is very hard to tell in photos. AND, it might be what she needs. ONly you can tell.
I might say to mix this up with some riding her on the buckle and letting her trot out without contact and then pick up contact slowly, riding long and low. Mix in some fun and she will give MORE when she is being worked.