<human>: Can you provide a brief rundown of the text in within 3 sentences?

Long story short, my roommate (of 3 months)/best friend for 2 years fucked a guy I had hooked up with (the night before and day of that she fucked him, she was well aware) in my bed. They used my condoms, he jizzed all over my sheets and then they discarded their used condoms around my room (including all over my childhood blankie, which is incredibly disturbing to me).

I stayed cool and said "looks like you had a fun night" and asked her to wash my sheets and blankie and clean up their condoms. She laughs and says "ok". No apology, nothing.

She was again alone with this guy for an amount of time (he was couchsurfing at our place) and I text her "Hey, please don't have sex on my bed again" and she responds "I know hahaha". Still no apology, she clearly knows I'm upset.

I come home from doing my thing and she's gone. She still hasn't cleaned my sheets or my room or replaced the condoms of mine that she used (they used like 6) nor has she made any attempt to acknowledge she's done something disrespectful/disgusting.

She mysteriously vanishes for 3 day and we go without talking for the duration. I was in our apartment and my door was open in an attempt to work it out, but she never came home. I wash my sheets, clean up her shit, etc. because I'm not sleeping in her filth forever.

Today, after her MIA act and silence she texts me and goes "Are we fighting?"

How do I respond in a way that isn't petty but also doesn't forgive the fact she acted in a way that has made me lose all respect for her and become indifferent about salvaging our friendship?
<bot>: My roommate/former best friend fucked a dude in my bed, took no responsibility for her actions whatsoever and is now acting clueless.