That's such a horrible domestic situation I'm very sorry to hear that. We've all cried over our speech at one point or another so I hear you. Stuttering is definitely not your fault and in that environment it sounds extremely difficult to make progress. I don't know where you live but finding some place or some people where you can feel safe to be yourself and be ok stuttering, that's what I hope you can find. It's not your fault and there is nothing wrong with you, including when you stutter. You simply stutter sometime, that's it