She`s very cute, you can see the gentle in her eye just from the pics. I don`t know much about barrel horses but from first glance I can give you some ideas. Her neck set is a little high for a stock horse but nothing you can`t work with, but she does have the underneck which means she may like to jam her nose out while riding, but nothing you can really determine till you get some muscle on her back as it may be compensation for the lack of toning. I assume she hasn`t had much attention payed to the poor girl in the way of excersize. The only other things I would be worried about (unless your planning on showing extensively) would be she narrows at the base of her front legs, so she`ll need constant wrapping and booting unless you want some nasty splints and cuts, And her stifle is a bit long. Make sure you turn her on some TIGHT corners at the walk and trot and look to her stifle area for any signs of weakness or lameness, because for barreling the short compact stifle is critical to prevent injury. Hope I helped! :)
No prob, and she is NOT ugly that`s for sure! Its critical to be able to look past the way a horses`s muscle can seemingly obscure conformation, and look at the bone. I bet with regular work and a top line she`ll be a pretty little racer!