Sounds like it affected you because she basically lied to you by omission, but tbh she might have just forgotten. I think you should just talk to her about it. Explain that you are not angry at her, explain that you are not sure why you feel the way you feel and basically everything you said in your post.
Why would you want to accuse somebody who may not be a pedophile
You broke up with her,. She told you multiple times to go no contact. You keep contacting. Stop harrassing her.
Sounds like it affected you because she basically lied to you by omission, but tbh she might have just forgotten. I think you should just talk to her about it. Explain that you are not angry at her, explain that you are not sure why you feel the way you feel and basically everything you said in your post.