<human>: Can you condense the text into three sentences or less?

To first clarify, I have 2 other roommates [28M] & [33M].  A couple weeks ago, all 3 of us agreed to allow [33M]'s friend [31F](not GF) stay with us while he went on vacation to Italy.  Apparently [31F] is having some problems with her living situation so we agreed to let her stay with us until either he gets back from vacation or she finds a new place.  

She seems to be a very nice, pretty girl and is respectful for the most part. 
She moved into our house last Friday and all seemed ok except she seemed to be a bit depressed.  I didn't think anything of it because she is going through a lot with her previous living situation and because she is not from the U.S. and is still trying to get her work Visa. 

In any case, this morning my other roommate [28M] discovered in the top of the bathroom garbage there was one of our kitchen metal spoons in there with what looked like peanut butter on it. To his disbelief he looked into it a little further and discovered it was actually poop! We have no idea what to make of this. Why she would do this, or if she did do this why she wouldn't at least try to hide it better like throw the garbage out! 

Now, we have no idea what to do.  She is a very sweet girl and kind of don't want to embarrass her or even know how to approach her about this.  

She is only staying with us for another 7 days.  We talked to our other roommate who is currently in Italy and he said he wanted to kick her out, but that is a lot easier for him since we are the ones who have to see her face to face.
<bot>: Found a shit covered spoon in my bathroom garbage. I believe it's from my temporary roommate who moves out in a week. Not sure if/how to confront her.