How recent is your intelligence? This was the plan last year. A group of people wanted to find a progressive woman to run against Lynch, not to win (which nobody thinks is possible) but to push him left on a few issues. To their credit, they discounted Wu quickly (even though she had already announced her campaign) and approached several other women. I've heard this story from two of them, and I'm sure there were more. Everyone was young, had families, didn't want the publicity, and didn't have time.
I am very surprised to hear that anyone still has this plan about Wu. Even at Christmas I was still hearing people talk about her campaign hopefully, and now everyone rolls their eyes if her name even comes up, and it rarely comes up. I was at an event the other night where I heard a table of people who I know don't like Lynch talk about how Lynch isn't actually that bad and is better than he used to be. I think it's more likely that he seems remarkably sane and competent in relation to Brianna.