A really annoying behaviour of a rum mate

This is a real behaviour of my friend shared to me
In a university of a country,i dont want to state the name of it.
This kind of university that accomodation only got two people in a room.
A rum mate that one day, her friend that in front of her room after both finish using the washing machine and come back to their room.That friend said our wash cloth powder already used a lot, then this my friend annoying rum mate, said it is because someone steal to using the wash cloth powder.OMG, what kind of the rum mate is, she finish her own washing powder and said her the only rum mate steal her powder to used.After my friend tell me about her annoying rum mate attitute, i also really fell sympathy of that. How a university student, dont have the bacis moral value ?I hate this kind of people attitude ,like to blame people although the person dont do it.
Who will interest her the lame washing powder?? It is rally hurt of my friend felling, although she did not do it.What she now will do is not in her accomodation room if can.She will go to the library to do her thing if got time rather in the room.That is the reality of how heavy of her rum mate curiousity of her about the stealling thing.How you all think about this, have u ever met that kind of person in your life....