Well, as I understand it the 4CCs are an ISU championship, so Mao is too young. Also, the US doesn't name the 4CCs team until after Nats. Furthermore, the USFSA can condition Michelle's bye on any terms they want, and, I think the ladies FS at the 4CCs is quite close to the Jan 30 deadline -- by which time Michelle said that, if she thought herself not ready for Olys, she would drop out, if given a bye on Jan 14.
So, I suppose they could name Michelle and the Nats bronze medalists to the 4CCs team, and announce they are using it as a "skate off" or a "test skate", if they wanted to.