Why even bother? Lets be serious, outside of a few people whining about it in the media there's no point in doing them. I know the naysayers are going to bitch, whine and complain (props Bill Burr), but they're going to do that anyway. She could cure cancer and some people would ask why she didn't do it 10 years ago, and then claim she gave them the cancer.
If it's even slightly seen as a risk where something could go wrong (for instance a mic gets stuffed in her face and catches her off guard), then skip it. All she has to do is hand him his ass in the debates, which is guaranteed, and trot into the White House. The reason the GOP and their supporters are bitching about it is because Trump screwed himself over SO BAD that the GOP needs her to drop the ball in a massive way. So they bitch, whine and complain, because right now it's cruise control. Trump can't handle being degraded, or spoken down to, or contradicted by a woman in public. Are you kidding? It's going to be embarrassing, that's why he's trying to get out of it.