I don't own much Catwoman, I'm afraid, just the first two Ed Brubaker trades and various guest appearances.
As for Steph, yeah, her dad abused her, not sexually, but he would lock her in the closet and stuff. What she meant was that she was wondering if the reason her Dad killed Murray was because Murray messed with Steph without his permission, whether it was an issue of Murray not respecting her Dad's "stuff" rather than him doing it out of any real love for Stephanie herself.
And to learn more about Steph, just click the "char:spoiler/robin iv/stephanie brown" tag at the bottom of the post and work your way through my Super Steph Series from the bottom up. I'm pretty much running through her entire history, you should be a Steph expert in no time if you read all those scans. :)