If she posted it first then she distributed child porn too. She can claim she’s the victim are you sending it out, but when she sent it to you, she wasn’t the victim because she willingly did it… So she is also a felon for sending child porn. If she’s smart, she won’t go to the police because she would also be in trouble.
And if you sent it to her own parents, well, that would be a stretch.
At any rate, I recommend you don’t reply to her and if you ARE somehow contacted by police, GET A LAWYER and let your lawyer know that the girl posted them first.
And your lawyer should let the police know that if they don’t also prosecute the girl equally hard for distributing the photos, they will sue the police station for sexual gender discrimination.
That usually will make the police back off, because they don’t want to prosecute women often times, but they go after guys unfairly
What you did was very dumb tho. Obviously her parents are going to take her side. You put yourself into a bad situation. The law always unfairly benefits women. You really need a lawyer if the police contact you, and it needs to be an aggressive and good one