revenge porn?!?

no
My friend and I went to the mall together to go to Victoria's Secret and later that night I took a pic in the bralette I brought to show her and she screenshot it 😳 I asked her what she screenshot and she said it was a pic of her even though she was lying. She sent it to me over text telling me about how she's gonna send it to a boy and he'll say "damn baby let me hit again" then she said she was just kidding about it. But the thing is that she told me to take a screenshot of her over FaceTime naked and I did so she could send it to her 19 year old BF that now claims her as his. He also be sending her 🍆 pics that she seeemshots and saves it to a secret picture place. 
Main thing is that I feel like she's gonna use my pic against me. What charges could I get? What could happen? I know it's child pornography but how bad is it really? I mean like she's my friend I trusted her then she turns around on me and did that. I'm really nervous now bc she's dating the boy I broke up with yesterday.