So what are you going to do?
Either decide to move on or tell her ~ those are your choices.
What are her choices?
She can't really make one about you, because she doesn't know how you feel.
Once she knows, she can ponder ~ and make a decision.
You may or may not be lucky with her; you may have to settle for just friends, but wouldn't you rather know?
Wouldn't you like to know how she feels & either become part of her life or get the chance to find a proper girlfriend?