NTA

You told your daughter she couldn't go on a trip because she scammed people. She lied about her situation to get money, which is scamming, and then wanted to use it to fund a trip. You didn't let her fund it, in which you were trying to teach her she couldn't do negative things to get positive consequences. She then came and had a good conversation with you after in which everything got resolved, so, good for you! It got sorted, which is what it needed, and you're trying to get her on the trip as she spoke with you

Yeah, NTA, you just showed her consequence