<human>: Condense the text into a few key points

We live in a 3b/2b house. Our current roommate, we'll call her Sally, is kind of a brat and it's totally not working out. 

However, we don't want to be mean about it. 

Sally likes to party, hang out, smoke weed, come in at 3am in the morning, and have loud sex at 5am thereafter. Not a huge problem for a 21 year old, but the rest of us have done the college scene and are settling into our jobs or focusing on other things. The problems stem from her bringing home strangers she's met on Tinder, having friends leave at 5am in the morning, being considerably loud and the aforementioned.

Conversely, the rest of us enjoy movie night and having friends over before 2am; parties when the occasion arises and hardly IF EVER being inconsiderate about noise/drugs/etc, especially when someone has to be somewhere in the morning.

Another thing is that two of us in the house own everything as far as couch, tv, fridge, kitchen ware, netflix, etc., etc. And, granted, she is more than welcome to use any of it. But leaving other people's stuff on and not taking care of things is bad character.

In any case, I don't think any of us want to be assholes about it. We've definitely all lived with other people before and know the tests some of us have put each other through only to become the best of friends afterward.

How can we approach her when the time comes at the end of our lease (probably 30 days notice) and cut ties with her cordially?
<bot>: Roommate is a huge brat. She parties hardy (at our place!) and we chilly willy. Our lease is about to be up and want to **kindly** cut ties. How do?