Hello DD.
Your story is very touching. If you can talk about all those things, then it IS a good sign.
For your medicaments: do listen to your doctors advice. It may not be good for you to stop cold turkey, but make it clear to him that you do want to stop.
I think your fathers violence wasnt totally related to the Borg, though maybe that didnt help.
My own mother was particulaly violent towards me, even before the Borg era. She too, now says it was because she loved me. I think these kind of people suffer from their own sickness, and find a refuge worshipping a violent god. It kind of justifies there own behaviour.
Good luck as you onwards and upwards.
jlp