I have a drunk friend and I refuse to let them into my house, I plan on threatening the call the cops.
Why would you treat your drunk friend like that?
I don't want to spend time with her because I find her boring when she's drunk
She might be boring when she is drunk but as her friend, you need to help and support her and most importantly make sure she is safe. Your friend is in a vulnerable state when she is drunk so you shouldn't just abandon her. If anything were to happen it will be on you and you will have to live with the guilt.
I'm not her mom...
I understand that, but you need to make sure that they're safe. Leaving them in the state they are at now could put them in danger.