This is sort of embarrassing, but I've been stalking my best friend over the internet for a week.
That's a strange thing to do. Why are you stalking someone who is your best friend?
Do you know what stalking is? It's like playing hide and seek, and it's fun to find out where they are.
It's okay to see where and what your best friend is doing on the internet.  But, it isn't good to be a stalker.
Call it whatever you like, I know where they are and they are not aware of it.
I think if she wanted you to know all of this, then she would have told you herself. Don't you feel like you're invading her privacy? You should show her more respect, and stop stalking her.