plagerism

So, when your colleague tells you they've been on your computer and read one of your essay answers to something that they're handing in a month after you, but swears that's all they've done, what do you do?

Particularly when you go to your 'my recent documents' and most of your research has mysteriously been opened too.

i'm in a quandary.

Initially i was just let down that the weird vibe that i've been getting from her for the last view days was because of something so underhand but now i'm wondering if it was even more underhand than i originally thought.

i think we need to have another discussion tomorrow.
i don't want to overreact but equally, i don't want my research turning up in someone else's work.
Particularly not after the blood sweat and tears that i've put into this.