>but I didnt ask her to
Why would any 15 year old be drawing sexual material of children? That's only a manifestation of prolonged grooming and EPI.
In a month you'll be an adult, while you're still dating someone who is still a freshman. You still have a chance to stop talking to her, but you won't because you're a pedophile. Kys.
Doesn't matter. She would only do that because of being sexually abused in someway, and since you're almost an adult dating a 15 year old you probably did play a part in that.
I'm just asking you to stop speaking to her entirely