No, Meely she is not institutionalised now.
She has gotten good support from her GP and now has a wide social circle that she didn't have before.
Still though when we ask about her relationship with our dad, it's "he's better to me now". And then i don't ask anymore. She looks after her mum in Holland and has two houses over here, so she doesn't see him as often. Maybe she finds him more bearable that way.
The thing is that he is corrupting her very kind and generous soul, and she comes out with hurtful and totally uncalled for comments (reminisant of my dad).
My sister and I have moved out long ago and he still is trying to be controlling. We have urged her to leave constantly for about 15 years, but he still manages to crawl back again.
Getting back to OP, you need to do this for yourself - find support from a women's refuge, i am sure you can find a phone number on the net.
If he a serious nutter, i would clear your computer history afterwards and use a public phone box to phone the refuge from. Some police stations have a women's officer and they too can help with getting contact with support organisations (particulary if violent).
hth's