Would it be okay now?

You don't have to hurt her but keep your son away from her. I know I would.

It's perfectly normal for you to still carry feelings of anger for her. I doubt if that will ever change. Almost 6 years ago, my sister's step-daughter and step-son abused my daughter over a summer vacation in Michigan...three months the ordeal lasted, and my daughter was too scared to tell me what was going on because they had threated to beat her badly. I didn't find out until she came home that she had been tortured & beaten by these two little brats. To this day, it angers me to even hear the names of those children and I hold out anger against my sister for allowing it to happen. We live miles apart...not only geographically but in other ways too, as I'm sure you can only imagine.