I think she is the reason Biden is still there, they don't want her and have no valid way to remove her. DEI hires do not work, and they are stuck. If they had anyone, both would have been forced out already.
I think the Democratic Party is going through the 5 stages of grief. We had the denial stage, the anger stage, and now they are at the bargaining stage. At some point they will get to the acceptance stage. Stay tuned!