I'm back home from the situation. Turns out it was a false alarm, and the person who is in the hospital is starting to get better even though the long term prognosis isn't good. It was a temporary relief for the family.
Throughout the whole weekend though my quietness became an increasing escalating issue. It got to the point where my GF's mom seemed like she was trying to push every button she could in me. Everything from trying to speak for me, speaking to me like a was a child or mentally slow, wondering out loud (and often very loud) what she thought I was thinking (which she always seemed to voice that I was thinking disparaging thoughts about the family.)
I had to deal with constant observations about my behavior, even the way I talked (Academic Speech basically). It came from various members of my GF's family, but the main culprit was definitely her mom. I tried voicing my concern to my girlfriend, but she completely dismissed it. I couldn't get much of a break cause we were 4 hours from home and had to stay with them. Pretty much had to just take it, because these people, especially when emotionally agitated can turn very aggressive, very fast. Her mom would even just walk past me and just try to stare me down for no reason. Like seriously eyeballing me like when people do when they are about to start a fight.
Even commenting on my facial expressions. "You always have this little smile on your face." Then abrupt stop like she wanted to continue with, "and I just want to smack it off" or something to that extent. Sometimes I have an awkward smile on my face when I'm uncomfortable and can't help it.
I've been around this side of the family before, and they were never quite this aggressive. I don't want to turn into their punching bag when they get emotionally stressed. Gauging from the stories I heard this weekend, this family in general has extreme anger issues and love to fight. It's actually something they take great pride in. Both sides of my GF's family are like this. I feel like I understand her more, now that I see the trees she sprung from more clearly. I just wish I would have seen this stuff before I moved across country and isolated myself with nothing but her family around. I think if I had a clearer picture of her "roots" so to speak, I don't think I would have made the decision to move.
And the f****d up thing is even though all this was happening the family also were very accommodating for me, I got along pretty well with some of them, and they often showed their gratitude for me coming and giving support, so my head was pretty twisted around and around this weekend.