I just moved in together with my 15-year-old girlfriend
How did you guys get together?
I just asked her, I think she liked the idea
You should not be living together. If you are an adult it is wrong to date children.
We are in love and her father agreed to the relationship.
Her father sounds like an abuser too. You need to take her back to her parents home and end your relationship before you hurt her or end up in jail. You should be able to find someone mature and age appropriate.