Yes to the physical reaction!!! Have you always had it? I have.
This is possibly separate but she had an interest in other people's bodies to an insane amount. Everything was scrutinised and commented on, also in public and about other people.
I remember an excruciating bra shopping experience where she was throwing bra after bra over the curtain rail and the shop assistant said 'could you not throw all the stock on the floor' I said 'it's not me, it's my mum!' withering look, didn't believe me.
She whipped the curtain back as I was mid change and I knew she wanted to keep doing that, it was insane.
She was always like that, really out of control. It's like she was stuck as a 2 year old who points at willies and bums and shouts about it with glee.