How do I get her to open up to me?

There is a girl that I want to talk to more and get to know better. At the moment I talk to her everyday, but I am always the one to start the conversation and it's really hard to get her to say anything to keep the conversation going.

If I ask her something like how her day went, she will just say something like "It went alright" and that's all. Most of the time all I get from her are "lol"s and what not.

I would think that she just doesn't want to talk to me, but she almost always replies. She has told me that she wants to be there for me, and on a number of occasions she has said "I love you" (I know she only means it as a friend). These aren't things someone would say if they didn't want to talk to you.

The only times I can ever get her to ask me a question, or state an opinion is if I am having problems with something in my life and she is trying to help me.

How do I get her to start actually talking to me?