Hmmm. Why warn about someone who is taking a break from their shop? Also, her reviews are consistently positive. If she's so awful, wouldn't there be more people, other than you, expressing their dissatisfaction?
I don't know this woman, but I can't help but feel bad for a reader who is being attacked for being "passive aggressive" and "looking through your content". It all seems reasonable and carried out by someone who is intentionally trying to slander her.