<human>: Can you provide a brief overview of the text?

Hey, :/
Long story short, I (M18)want to break up with my girfriend (F18) for a multitude of reasons. She's become possessive, dependant(emotionally) and will emotionally manipulate me out of hanging out with my friends.
Yes, we have talked about it. We both agreed to change to try and save the relationship. But she continues to lie and guilt me into doing what she wants.
I want out before it gets worse. She says she feels like she's losing me but she keeps looking for excuses to get shitty with me.. Which just makes me feel like shit, and adds to the cons.

However, I'm worried about her post breakup. She lives with a father whose nuts, and kicked her sister (24) out when she was 18. Regarding her mental state, She has resorted to self harm in the past. I encouraged her to seek counselling however she was very unwilling. She has few close friends and if she's not with me, she's moping at home while being passive aggressive about me not being with her.
I guess my question is.. How do I get out and ensure she'll be okay..?
<bot>: Girlfriend(18 ) has made herself entirely dependant on me for happiness, I (M18) want out. However want her to survive the breakup.