Tween is so crabby and seems to hate her family

Hello all, just writing because I’m distressed over my 11 year old. I know the things are probably normal but I can’t help worrying. My daughter is so crabby and negative all the time. She has a 3 year old sister and two year old sister that she’s mean to. She yells at them, sometimes will shove them, and just generally acts like she despises them. She says she doesn’t like them and they bother her all the time. The same with her 9 year old brother. She’s hostile to me and my husband and says the same thing, that we bother her and that we “judge” her. I don’t even know what she means. She sits in her room all day by herself and just talks to friends online and plays video games. Only comes out to eat and go to the bathroom really. She has ADHD too so that doesn’t help. What do I do? I try to engage her more but nothing seems to help. She’s my oldest so this is new territory for me dealing with a tween. Any advice?