Was he a molester?
I don't remember him being a molester... just an abusive drunk.
Yes, an abusive nasty drunk.
It's inferred in the new film, but I don't think the 90s version -- that I remember.
In the book she hallucinates him chasing her going "I WANT TO FUCK YOUR PLUMP CUNT". So, DYOC.
There's also a scene where her mom asks if her father ever touched her inappropriately which she denies.