QR
She is not the best put together I have ever seen, having said that, she is 17 and if she is sound and in work, I'm not sure if that matters much...
Looking good condition wise though.
She looks like a sweet mare. I don't think her legs look hideous! Se is a bit goose rumped but I can't see any windgalls or old scars/swellings etc so I'd think she has done quite well for her years and should have a good few left in her. Does she pace? If so it would be hard to teach it out of her at 17 so she might not be ideal if you wanted to do dressage but otherwise she seems like a nice mare.