Girls who get alpha widowed can be really good on paper. Slim, Christian, thinks feminism is stupid, etc, but they'll put up all kinds of road blocks when dating because they don't actually want to get into a new relationship. They want the old one back. They're basically off the table as they're just going through the motions and aren't ready to go all in.
You've just described the main woman I've pursued this year. It's very sad for her as she doesn't fit the portrait of a cynical, jaded calculator. She's a churchgoing Christian devoted to her tradwife dream and she fell in love with someone who clearly only wanted to keep things casual (he was sleeping with other people and told her so) and couldn't/can't let go. Now she's convinced she would need the same chemistry very quickly with anyone new she dates or it would be a waste of time. She's 27 and she said she's already noticed she gets less male attention than 4-5 years ago. She's gaining weight. I'd probably marry her tomorrow if she was interested, but I don't like the trajectory right now and certainly I don't want to be her consolation prize after five more years of aging, weight gain and looking for something better.