<human>: Give me the gist of the text in a nutshell

My best friend recently moved into a new share household, which is a really lovely place with decent rent. Her housemate was a friend of a friend type situation, but nice enough, friendly and welcoming. At first she just seemed shy and didn't want to participate in parties or big dinner events or anything (if you can call college budget food a 'dinner event'), which seemed fair enough. As time went on she became more and more reserved though, going outside less and less, to the point where my friend would come home after a full day of work to find her housemate in exactly the same position.

She didn't do any housework, despite being at home all day, she never cooked her own food and worst of all when we went to track down a bunch of cutlery and tupperware from her room, every inch of it was covered in stuff. We're talking 1ft deep over the whole room except for a sleeping-bag sized gap in the middle where she ate, sat and slept. There were two beds in there! Two beds! With stuff on them, and beneath them!

Calling up her previous housemate, my friend asked if she knew anything about this and was told that the current hoarding housemate had displayed exactly the same symptoms for her, which is why she bailed. My friend is nigh on murder because all the utensils and things she brought with her have disappeared into this carpet of junk.

Trying to communicate, help, anything with this girl went from awkward but socially nice conversation to one word answers to grunts. She seemed to stop going to work and to college, though she may have gone whilst my friend was out. It didn't seem likely, let alone possible...

Cue one week ago, my housemate terminated her bond payment, packed her shit and shipped out to live with someone that she not only knows, but is as compulsively clean as she is. We feel bad that we couldn't help this girl more, but all attempts at helping her out were met with annoyance.

I can honestly say though, I have not seen anything more scary than someone living in their own detritus, and seemingly unable to comprehend the scale of the problem.
<bot>: Friend's housemate displayed signs of hoarders and stole her tupperware, my friend decided that moving out at her own expense was cheaper in the long run than homicide.