My friend has an almost year old English Setter that she bought from a guy selling "championed lined huntin' dogs" out of his truck in a parking lot. Yeah, I cringed too. Anyway, she's got a pretty noticable bowing of her front legs and her front feet are pigeon-toed. She also crabbs when she trots, though will run the live long day without issue. Is there any sort of supplement my friend can give her to help this? Vitamin C or something?