Maybe she thinks you could be a friend.
I personally think it's better to be a friend first and think about someone romantically later on.
Take it easy with all of this. Consider going places with her - not date-type events. Go to parks, sports events, museums, art galleries etc during the day. Nothing back at your place.
If she's interested in more, she may suggest a movie or dinner in the evening rather than a daytime friends get-together.
In any case, relax.
Long-lasting romance/love can take a while to develop. In the meantime, you can gain a good friend.