How do I tell a girl I use to be with friends something stupid she just said on facebook?

[531]

I use to be friends with a girl i knew from like 3rd grade, i stop talking to her in middle school. I'm 18 now and Finish school. she still goes to school. I'm friend with her on facebook, i see her to put stuff on her facebook that like her and her boyfriend broke and then get back together like only hrs later. I feel that wiser than most teenagers because i finish school early, Im in a 4 year relationship, and i take care of my grandma. 2 times and i try to give her advice and she didn't even bother to comment back and went on with her stupid boyfriend. This what makes me mad she got preggos by him and had a mischarge like a months ago she says on facebook, "sometimes I wish I was still pregnant" I was like these teenagers want babies!! she is stupid for saying that. So how can i tell her in the nicest way, why hell would you say. like omg finish school first and grow up. she says oh i love him and all these bullshit. im like you don't know what love is. Teenagers say i love you and don't know the true meaning it.

[Guillermo]

Tell her nobody cares! That'll get her attention. Haha