Kamala is taking on water, and I wouldn't be surprised if she either backs out or tries to re-schedule the debate. That's what I would do, if I ran her campaign. I think her best chance is to go "radio silent", and just hit some rally's in swing states. She's got the most powerful political machine in history behind her, and she is quite literally, the last bullet in their gun, to try and stop Trump. Every single time she opens her mouth, her numbers drop. Even WITH all that, the momentum seems to have shifted, to Trump, for the duration.
As always, that's just my 2 cents.