Why are you asking us?
I'm sorry, but this is a stupid question. The only way you're going to find out the answer is by talking to her yourself. What is it with guys that they cannot understand that girls can be friends with a man without wanting to have a sexual relationship with him. Not every guy that a girl talks to is going to be a special partner. She obviously values your friendship, but she has had the chance to take it beyond friendship, and didn't want to. If circumstances have changed, the only way you will know is by asking her. I suspect you will get the same negative response, but I could be wrong.
I will point one thing out to you: some of the most successful and happy marriages have come about because the two people started out as friends. Remember, you are friendly with her because you have things in common with each other, and she at least doesn't find you objectionable to look at. Knowing the way most guys are so visually orientated, she must be pretty, or have a great body, or something that attracts you to her. If you enjoy her company for her conversation as well as her looks, then even if you never become lovers, you will still have a good friend. But if friendship blossomed into romance, then you stand a better than average chance of having a happy marriage together.
They her friend, and bide your time. You can ask her how she feels, but don't try to push her into something. If and when she is ready, she will let you know.