I also noticed (although maybe my eyes are just messing up) that the rider is on the wrong diagonal at the trot.. so I think with a good rider who will put the time into her, this mare could turn into a great horse.
I know, I'm really just trying to find a horse that will be the whole package, although is requiring a bit of training. I'm definitely going to look for a horse with nice conformation (preferably conformation that will help them excel in hunters), a nice personality with a good work ethic, and the potential. (and are showing it) I also want a mare who is around 15.3hh to 16.0hh. Those are my only real must-haves.
I do have some "superficial" wants though, although I wouldn't buy my absolute "dream horse" if it was cow hocked, was a total grump and wasn't sound nor could it compete in jumping eventually. I just have preferences. I'd prefer either a dark bay or bay mare (or even black) with a bit of chrome.
Request a vid from the seller, but ask for the horse to be ridden without a martingale, I would like to see if she engages & rounds better without being forced. From what I see, a decent horse, but I need to see how much babysitting was done, right now she is compressed from the front & no rear end energy. Sometimes, if ridden past the point of "get the idea", to "I need this to brace", it takes a good while to teach proper collection. That will make your job much harder.