To 3b) that was related to bug 1) and it stops if Hailey gets knocked down.
To 4) It was happening if Hailey was standing up right and then started to masturbate - bat was attacking standing hit box. With crouch he was attacking crouched hit box while naked and while masturbating and with prone, prone hit box.
To replicate number 5) I mostly leave something for her to play do the level and when I get back it start to happen like 4/5 times.