From what you’ve said, yes, she would definitely feel rejected! Especially if she was really interested in you, which it sounds like she surely was. The only way for you win her back is to do something very direct and clear that you are now interested. You should tell her that you weren’t interested before because you were still hurt by the previous relationship, but that now you are available to be with her — IF she is available as well! You may have missed your chance. You will find that timing is a crucial factor in relationships.