I'm scared to read her reply to this?

It sounds like she is your friend it's just that some people are more sociable online than they are in person. I am exactly like that , this girl talks to me all the time on facebook but I rarely speak to her in person, don't worry i am sure she is your friend you just need to have more faith in yourself stop considering yourself as a burden to others . Have a self esteem and if she is not your friend oh well ? You will find other amazing friends .