Everyone of these posts is "wisdom" from a parent. Listen to your heart, trust and check into the "party host/house".
My parents would not of allowed it, and neither did I with 2 daughters and a son. Growing up thou, our house was the meeting place (I had and still have the coolest parents) and my kids were welcome to bring friends, but "no one" in bedrooms with doors shut.
You will make the right decision for you and family. But take time to check it out, and take time in discussion with her.
I am sure all of here will be thinkin' about you!