This friend of mine has been flirting with me and I think she likes me but I don't like her like that..help?

That kind of hard because it sounds like she does really like you but just make sure you never tell her out of no where that you don't like her in that way. Something you could when talking to her is just say "I think you are a great FRIEND" or "I'm glad to have a FRIEND like you". It might hurt her hearing the word friend but at least she will know how you think of her. Good luck