I guess she wants to wear a tail & a mask when she goes out some places. I can't see the harm he sees in it.
A lot of people will perceive her as "weird," but she IS weird. She is not like most other people. People see that.
Some people are actually drawn to her weirdness because she is so charming, & clever. Those people are unlikely to be thrown.
It's not shocking that she's a therian when I have always looked at her & thought "if you told me that child was fey, I would believe you".