I don't think dreaming about someone you haven't thought about or dreamt about for years would be a connection to them, sorry to say. You could try contacting them, but they're just going to think you're crazy for calling out of the blue to ask if she had a particular dream.

In other words, I advise the same as everyone else in the thread thus far - it'd be best not to look too deep into the possibility of her having a similar or any kind of significant dream, and not to contact her just based on the dream.