Because it only makes sense for an animal lover like Rydia- She will be hating and attack every animal she can find, monster and anthropomorphic creatures (looking at you, Shadow) included. Feel free to bother her anytime, she's probably somewhere hunting nugs. She also sleeps somewhere in the spires so if you hate building or sleeping people Rydia is game!

And if there are no animals around, guess what, she'll be around trying to calm down things between people so if you hate deescalation tactics the summoner is your girl!