Family Issues!!!

Sydni
So long story I lived with my aunt and uncle their 3 older children ranging from 34-29. Two girls middle a boy who was never in the picture due to moving away for college then joking the military right after. Now the youngest is treated like a princess and does no wrong. The oldest is independent but sees the special treatment. Everyone was semi supportive I'd say most of my pregnancy. But come month 8 I have a surprise shower hosted by my youngest cousin ex bestfriend that I've become close with over the years. I've known her since I was 11 fyi now 24. That's when sh*t hits the fan. All this drama comes up from when I was 6mon. It turns into a huge fight with my 2 female cousins threatening to "beat my ass". One is saying she can't wait for me to drop the baby the other one is saying I'll beat your ass 8 months preggo or not. Things get physical I hit one of them..I pack up my stuff and basically was house to house for 3wks. Staying with my best friend and then my older cousins ex best friend. Funny how close I got to their friends. 
I eventually find my own place and have my son 10 days later. Nobody came to see me in the hospital despite knowing I had complications during delivery, nobody calls me, they cancelled my car insurance while in the hospital and threatened to cancell the tags on my car. I am now back to work and living my life and NOW they want to be adults and actually sit down and "discuss" what happened in February and meet my son. I agreed to go but only if my boyfriend comes in case things get rowdy. 
The more I think about it I'm unsure if I feel like talking about it or them even meeting my child. I just graduated from college Monday despite them thinking going to school preggo was a bad idea I did it and proved them wrong I didn't even invite them. Everyone is saying they are family & it's a tough situation. I really don't want anything to do with them. I feel as though I'm doing it because I miss my cousins kids. Idk if I should do it or keep space a lil while longer!