Though your photos are better than many submitted for conformational critique(good for you!), with only essentially un-squared-up side photos, it is not possible to see whether her legs are straight 'in all directions', but they appear so, from the side. I agree about the really BAD,high-heeled hoof trim in the second photo-it needs to start being corrected, NOW!(Boy, do I see LOTS of improperly-trimmed feet on minis, both in the flesh and in photos...makes me crazy!) I also agree that the tail set might be just a bit low(but no biggie). Where I would fault her 'most', from the photos presented, is in being a bit short(shallow) in the hip(point of hip to point of buttock)-and, a bit straight in the shoulder-and,in having a somewhat plain head, including a slightly improper ear set. None of these are BIG issues, though, IMO-- she appears overall pretty balanced, however-length,tie-in, and cleanness of neck are good, and proportionate. Based on what I can see in the photos presented, I wouldn't 'turn her down' to own and/or breed(and believe me, I am FREQUENTLY not willing/able to say that about mares I see, either 'in person' or in photos!! )It looks to me as if you have a pretty darn nice mare....might not be a big halter winner in today's 'trendy' show ring, but nice, all the same--congratulations!
Margo