She’s scared. Fearful of repeating another Biden-like debate fiasco. She should be more scared, since her record is flimsy at best and she has no debating skills whatsoever and her speaking skills are about equivalent to that of a third-grader.
She’ll debate only via e-mail, with the questions submitted days in advance to give her debating team time to organize a response which she can deliver via a teleprompter.
I have suspected for some time now that she’s not only dumb — but she’s illiterate, too.