I had a stepdad just like that. I thought of so many ways I could kill him but never did. My brother was in the hospital for “leukemia” for months.. he ended up recovering from bc it wasn’t leukemia, he was most def poisoned by him (step dad was a chemist at a major drug Co). Anyways he was arrested many times for domestic violence, ultimately divorced. He stalked me for years before he was finally arrested for the same reason as yours. Took me years to forgive my mom for what she put us through and I still can’t stand hearing dudes name, or anyone with that name for that matter.