I read the individual had access to the barn. I did not see where the individual was a competitor.
Also, dont take my comment as assuming she is not white. She may very well be. Regardless, this is a sick individual. Who else would do something so cruel?
To your first point: Indeed. It could have been motivated by any number of things, all of them evil.
To your second point: I suspect that the perp is “white” largely because the whole thing is pretty much a “white thing”. Could be wrong of course. Also, while the attack is sickening (or infuriating, depending on one’s temperament) the perp isn’t “sick”. The perp is evil. We need to rediscover that word, evil. Some people know they’re doing wrong, and do it anyway.