Needing Prayer and advice

Mentioned in another post I am having to move out and cut off family.

The issue became my family or my boyfriend (we are planning to marry). Anyway, it's all about the living situation. Boyfriend was staying with us cause I accidentally got him kicked out of his apartment.
Yes, I already know living together before marriage is bad. Economically though it's helpful because rent is high and we share costs on food.

Anyway huge blow up with family because they don't like my boyfriend's attitude and the fact he didn't speak to my sister who has power of attorney over my mom's home. She had a verbal arrangement for rent to be paid by us. We have been paying, I was further behind than my bf was. My bf lost his job due to a bad decision and a jealous coworker.

So he ended up needing an extension. I told my sister about it the following month on the day that my mom gets into a second car accident my sister storms in and she says so what about his rent? And I was like uh we told u he's trying to find a different job. He had savings just her wanting rent when he hadn't secured something else yet would have hurt us badly. Again he has been paying and I'm further behind on my rent but because he's not her family she was very rude to him.

He got fed up said I'm moving out taking my money with me then. Cause she started demanding rent for both months when I literally told her at least give him an extension for one month until he finds work.

So then she got her husband involved. Her husband started threatening my boyfriend and calling him names. Fast forward, my boyfriend got set up by a friend he went to hang out with. Another guy showed up and stabbed and shot my boyfriend in the arm.

My sister started harassing my bf saying he has until sat. To move and I got really mad at that point and told her off saying we are both moving as quick as possible and that he was just shot and stabbed so leave him alone kind of thing.

Well again she tells her husband and they both started saying all kinds of awful things about him and making fun of him for being shot and stabbed no compassion whatsoever.

My mom is "mentally handicap" so my sister handles all her money and stuff anyway she's even got my mom on her and her husband side. My mom seems like she doesn't want to get in the middle of it but she kept saying well you know I can't do anything about it. Your sister does what she wants kind of thing you should have been nicer.

I tried to be nice and reason with my sister but as soon as her husband made fun of my boyfriend for getting shot and stabbed I went off and said horrible things to them both. I feel bad about it but I'm so very angry that anyone would say that about someone I care about.

Now we are moving and I'm scared. I don't know if I am the jerk for wanting to cut my family off or if i am right to move on and not trust them.
I am moving with my bf. We have our savings, I have a job (that's hanging by a thread) , and he's getting another mechanic job when his arm heals (stiches come out) in a few weeks. My bf and I both have high demand fields so pharm tech and mechanic so we get jobs quickly, but still Im scared. It's so bad burning Bridges with people let alone family.

I'm scared. My bf isn't perfect either and we fight sometimes. I'm wondering if I'm completely out of the will of God for this whole thing.
I feel like it's either give up my family now or my future marriage. I can never talk to my sisters husband again after what he said to me. I genuinely dislike the man now.


I need prayer and advice thanks.