you know, she's not really dense or stupid, she's just operating under the assumption things are going to take their proper course and that she's just a minor bit player in all of this (which to be fair before she took the initiative, she was) so it's less being dense and more assuming it doesn't matter if she wants to be with him or not, some things are just going to happen regardless. she really didn't think she'd work her way into his heart the way she did, again probably because she just assumed his heart would be swayed by gracie, not knowing just her small acts of kindness destroyed that future outright.