You didn't do anything wrong. You did exactly what you should have. You went from a situation that you both knew to something different. You needed more information, and the answer didn't totally fit the future you saw. That's okay. They are probably figuring out what they need out of the relationship. After a few days ask her to do something extremely platonic. We all need close friends. She will need you to be a friend. Give her another chance to be that amazing friend. She will always remember where you want things to go. Will it affect what you two have? Very likely, but I think it's something you have to push through to keep her as a friend.