When she first arrived she was feral, although obviously once had a caring owner who had her pierced as preparation for a future life. For whatever reason she had obviously been abandoned, and now a new caring owner has taken her on .
The piercings make breaking her in somewhat easier, as she is eventually easily led by her cunt, she puts up some resistance but it is largely just a gesture by this stage, and he is sure she will be a useful addition to the stable.