So if you were looking at her facebook, then maybe her facebook automatically sent you a friend request, like maybe it found your email or phone number on her computer. Why should she have to explain, youre in t school, she probably figures you would understand the boundary. A lot of times i call instead of texting or vice versa just because i get the icons confused. Same thing with facebook, you do stuff you dont want to because there is no other way out of the screen.