Pressing Charges for Invasion of Privacy in Canada (Facebook)?

[Christian]

So here the scenario,

I left my computer on, adult comes into my room, not my mom, not my house, opens my computer, witch the screen was off, and looked into my facebook (already open) and goes though some of my messages with other people, not only invading my privacy but others.

I have word and situations that she has done this before to her son, so it is very likely she did it again.

She was the only one at the house at the time, my friend left minutes before she went on.

Tells me it wasnt her, or anyone else, only logged on that computer.

This really bothers me and hurt me that this was done.

Can I press charges on her?