Help Investigating 🤭🤨

You ladies are better than the FBI sometimes and I need a little help. There are messages on my boyfriends Facebook messenger with a girl (his ex, he wasn’t doing anything wrong) but when I click on her profile it says the link doesn’t exist. Does that mean she erased her Facebook or that she has him blocked? I figured if it was erased then the messages would be gone as well?

They have a kid together and she hasn’t seen the kid in years... This was the only way she could get in touch with him. She doesn’t have his number or know where we live. Wondering why she would cut off the only way she has to contact her own child... smh.