15 y/o Arab mare - conformation/movement critique wanted

Rosie's a 15 (16 in March) year old Arab mare. She is mostly used for flat and dressage work with the occasional jump. I compete Arab circuit with her in hunter pleasure, show hack, road hack, equitation, and showmanship, and am considering trying sport horse division. I am aware that her topline is poor and I believe it is just due to her age. The photos range in date from May 2011 to fall 2012, and both videos are from December 2012.

She is definitely Arab! She is typical of the Arab through her croup. She does lack a bit of topline but if you can get her working long and low (so she stretches and lifts through the back) it will help build it up. She also looks like she turns out in the near fore based on the bottom 2 photos but could be just the way she is standing. She is very cute, lovely bodied mare. She also trots with a lovely spring in her step!