Can’t see her skipping the debate. If anything, I think she doesn’t collapse like many expect (or want).
I don’t think she’ll collapse either. In fact, she may come out quite spry and on the offensive. People don’t take into account that these medical episodes aren’t constant, they’re snapshots in time. She manages quite a few events between coughing fits, seizures, etc. And her team’s had time to figure out what went wrong.
But if she does get out of it my bet is she’ll say it was rigged for Trump, emphasizing his height, whatever.
She will be there. There's no plausible excuse that could be given for her to miss the debate. You may very well be right also about her getting through the debate without any apparent problem.
She looked ok in her last appearance—not great, but ok.
She can last a half hour based on the drugs they give her.
However, the later stages of the debate could get interesting as the drugs begin to wear down....