Mr Murray's nocturnal visit? (SPOILER!)
Why does Katie wake up the morning after the visit wearing a long nightdress?
She passes out after having been drugged and when she is unconscious Mr Murray enters via the secret door to amputate her finger. When she passes out she is dressed in her day clothes but when she wakes up she is in this old-fashioned nightdress. Presumably Murray took her clothes off and put her in the nightdress but why?
He didn't do it to steal her clothes - they were strewn on the floor, there was no suggestion he assaulted her in any way (except for the amputation) and he didn't need to undress her to cut off her finger. That bit never made sense to me.