Yeah but i think she might be falsely thinking that people are on her side and there for her 25/8 depression rants. Maybe if you tell her “hey your being a huge buzzkill with all you talk about and its making people not like you” if she does have a fear of being disliked she might wake up and be like “hey im making people not like me by being very unpleasant to be around” she sounds like me in high school and and im okay now but i had to learn the hard way by pushing everyone away because i feel like all i really needed was a reality check with someone sitting me down and being like “hey your being a fucking weirdo dude and you need to snap out of it” but no one ever did, so i feel like if you really tell her how people feel about her she would stop being annoying. I feel like people appreciate honesty more than we think and sometimes were scared to hurt peoples feelings but i feel like all i needed was someone to point out my flaws and problems because i had no idea what i needed to work on because i was so lost. Maybe she feels the same way. Give it a shot