She's SUPER cute!
The ONLY major thing I see, especially in the second photo, is her neck looks to tie in pretty low. Which in turn makes her look really heavy in the front end. For a trail horse she'll do fine. Heck, for most any work she'll do find. But when you start picking her up for collection, getting her to round her back and really carry herself - she may struggle to do that well, just because it will be phyically hard for her.
Other than that she also looks weak/long in the pasterns, and maybe cowhocked by looking at the second picture. I love her back, rear and head. Very feminine face (which is always nice on a mare).
Overall very nice horse you've found! I'm excited for your guys' future together!
Did I meantion she's SUPER cute? :)