Please don't worry about this--I know especially when they are that young that the idea of them crying themselves back to sleep seems awful, but I'm sure that your bond is fine, that dd is fine, and that this will not leave any impression on her at all. Think about how many people used to do CIO, at even younger ages! I know that most of our parents did something like that--it was normal back then--and I don't think our whole generation is messed up
And I know plenty of people who have done CIO with their lo's and honestly, they all seem fine--totally bonded, happy children who love their moms.
You're doing your best--that's all you can do. Tracy doesn't even recommend using moniters at all so you will only hear them if they really cry--maybe your lo didn't even cry that much. Keep up the good work--your daughter knows you are there for her and love her.
~Kim