The OCD flatmate from hell!!!

So...my honeymoon period in the flat seems to have ended with the return of the 3rd housemate back from her 3 week vacation in Hong Kong.

She came back on Thursday and me being chirpy and friendly immediately asked her about her holiday in China (as that is where I had been told she'd gone) as soon as I saw her. She responded making a real point of telling me it was Hong Kong in a way that implied she felt I should have known "Sorry I'm not a mind reader". Next she says "So you moved in then?!" by the way she knew I was so this was both a weird and pointless question...why else would I be there!! I replied in the only way I could see how by saying "Yes". Then "Are you going to put away your stuff?" I wasn't quite sure what she meant but guessed she meant the 3 little boxes by the sofa I hadn't got round to unpacking so in the most casual way possible I said "oh yeah just haven't got round to it what with work and everything" what I wanted to say was "Where? up where the sun doesn't shine?" but decided best not!! So later that evening I unpacked 2 of the 3, leaving one small box of things I literally couldn't fit anywhere!! Next "Are these all your flowers?" Thinking she meant the 5 pots on the kitchen table I responded by telling her 2 were mine and 3 the other girls. She then informed me she meant the vase of freesia's I'd bought and put by the tv! Weird way of asking if you ask me and quite rude, she could have said (as the other housemates did) how nice they were!!! Anyway again in my most casual way I said "oh yeah I bought them for the flat, thought they'd cheer the place up a bit"....her response....NOTHING!!!!!!

Then today I get back from my weekend at home, dreading it really because of her only to find that that one box had been shoved in the hallway cupboard (along with a few empty boxes I had meant to take down to the rubbish) and my blender pretty much thrown in a kitchen cupboard...well the box is now unpacked, empties taken outside and blender....back on the work surface...sorry but I use that every morning I don't know why it can't be left there!!!!!!!!

So the next house hunt starts here!!!!!!