I've been thinking about consequences for a while.
She's a major player, and I know she's always up to her gills in work. She represents a good friend who's had phenomenal success with her but admits she can't organize her way out of a paper bag. In her defense, I'll say she e-mails me back immediately every time I contact her. I mean within the hour.
When she misses the next deadline, I'll call her and we'll talk. She's been available to talk both times I've called in the last four months, and my impression remains that the problem is 60% how busy she is, 35% how disorganized she is, and maybe 5% some BS.
One option I don't have is walking away to another agent. My book is definitely an acquired taste. This person is the first agent of dozens, and over a decade, who has loved it without qualification, and the only one to offer to rep. If I walk away, I'm walking away without other offers.