There is a girl I like, she is extremely shy. I have tried to converse with her over email, giving her compliments, asking her general questions, to try to get her to talk with me. She always responds, but with one or two words... not enough to reply to. I see her at school, but I know she would say even less there. What could this mean? What can I do to get my point across that I like her, or does she already know and is trying to push me away? What should I say that will likely give a clear indication of whether she is interested in me?

Why don't you start slow, with her at school, just by aying "hi" every now and then.
And slowly make your point across.

Hope this helps

Love,
BlondE-MO