I had to go with a 'no' on this way. Suffice it to say I believe it is more complicated than a simple 'yes' or 'no' answer.
On her blog and on Facebook she has some control. In those two places she can display her perceived brilliance and importance without concern of anyone questioning her brilliance and importance. If by some chance someone does question her greatness she can remove it. On DU, she does not have that luxury.
I have no doubt that she'd love to go back to DU. She seems to like being the center of the universe so the more people paying attention to her the better; however, too often on DU her perceived brilliance is clouded by individuals who dare question her brilliance instead of bowing down to her. She just can't have that.
I think the only way that she will be back at DU is in a Mighty Mouse (here I come to save the day) scenario in which she feels her brilliance is so bright it will blind and amaze even the naysayers.
The one other scenario that might take her back to DU is if enough DUers essentially beg her, in some shape or form, to come back.
Regardless, with the current rule system in place at DU even if she were to come back it would be a short stay because at the end of the day a nadin has to be a nadin.