Always background check your babysitter

Sorry I haven't updated. I've been dealing with this legal situation. I've made 2 post where I suspected my 18 year old babysitter was sleeping with my 14 year old son. It turns out it was true and she lied to me about how old she is. She's 25. I said things were a lot darker than we thought they were and that's because when they went through her phone, she was exchanging the nudes my son sent her for money. And she has also had nudes of my toddler. None of my 10 year old but she was saying she would get them and her boyfriend was in on this. There was so much dark shit going on and she had charges from her past which is why she lied about her age so I couldn't match her to that person. She seemed like a simple 18 year old trying to make money. Background check those girls like you would a guy you just started dating. This us my fault and I take full responsibility and feel guilty because my son is saying its HIS fault for putting his siblings in danger. We are trying to heal from a terrible situation.