She's lovely! I love hearing riders import their horses instead of getting them locally-such a waste of time locally. Absolutely love her under saddle. She looks very alert and willing to work with her rider.
I think your equitation looks lovely, but needs a stronger foundation, and that reflects in your gorgeous mare. You have to push her forward and engage her from behind, and allow her to come into your hand(I also suggest shortening your stirrups). Lift your hand off your lap and and try to prevent that break in your wrist to allow for a better contact with your mare. Push her forward from behind with your seat and lower leg.
Good exercises to increase that engagement is doing a LOT of transition work. Walk, trot-trot walk, canter walk, walk canter. Circles, lateral work.
Working with her now on those especially at her age is really important because you guys are still building her hind end and her topline. You guys look absolutely lovely. She is beautiful.