I think someone like George H. W. Bush should make a subtle public suggestion, she think about it.
I don't think a suggestion by GHWB would move her, but millions of heartfelt postcards, letters, and a some TV ads just may. She said herself that it would take "an earthquake" to get her to reconsider. If the race keeps going as it is, she'll probably get that earthquake.
Heck, I can only imagine what she's thinking, watching this circus. I wonder how many nights she's gone to bed thinking, "Am I truly the only one who can do this?"