Who's kids are weird?

So my 2 youngest, 16g and 11b are very social, involved and want to be included in all things. My GF has 3 girls, 14 and twin 13yo. The 14 year old is much like her father and really doesn't like me. The twins are pretty ok with me. When they are with their mother they ALL spend the WHOLE time in their rooms. Maybe they'll come out for dinner, maybe not. They're not huggers and don't socialize with their mother and avoid all conversation with me at all cost but if spoken to, they'll respond. My kids LOVE being around me and my GF, mine are very affectionate and hug and need all the attention they can get. My GF feels my kids are clingy and needy. They are very mature and prefer being around grown ups. They notice everything. They count how many (alcoholic) drinks we've had. They are fully aware of how we act and of what we do. Her girls? Oblivious. Or maybe would just rather not know? Maybe they just dgaf. Their father was a verbally, physically and emotionally abusive alcoholic to their mother and the best I can figure, after years of listening to their parents fight, they would just rather not be around or included. I'd like to think their room is their safe place and being there has become a habit. Please help me. If my GF can't accept my kids, then I'm out too. Who has the weirdo kids? I feel like socially and involved kids are what everyone would want. She feels like kids should seclude and entertain themselves (basically)