I also noticed that immediately after that episode was when Ruby's clothes became less overtly sexualised

I'm pretty sure it was literally the moment she returned to the B&B and told Granny she wanted to be a responsible adult, which says some things I'm pretty uncomfortable with. But yeah, I was sure her fairy tale was going to the sexual violence kind - or the heavily-symbolic-of-sexual-violence kind - and having her be the wolf was perfect :)