A girl moved in with me, I don't know her parents ⇐ General

[Anonymous]

Hello everyone. I am 26 years old, my girlfriend is 18. It seems to me that she decided to move in with me, we have actually been living together for several days. I'm confused by 2 things: 1) she is still in school and graduates this year.
2) I don’t know her parents at all I heard her talking on the phone with her mother, I got the impression of a stern, powerful woman. I don’t know about dad, he’s on a business trip now, but it seems to me that he’s about the same. Would you let your schoolgirl daughter (even an adult) live with a guy? I don’t even know if she told her parents about the move and how they would react.
It’s just that I myself would probably resist this. Should the father, for example, control all this? And it’s obvious that we’re already having full sex with her. In such cases, should a daughter report to her parents that she is already sexually active and with whom? Will there be hostility, especially on the part of my father, because I am, how to say, noticeably older than his daughter?