How do I find a personals site that my girlfriend is on?

She has her own computer and I have mine. Is there any way to find her personals site from my computer? She wants to find a woman for a first time ual experience and I just want to ease my mind that she's not looking for another guy. I am trying to trust her but this sounds fishy to me. Please don't give smart*** answers. I would like some helpful answers. Thanks.