I think she is just tired from partying or staying up late.
Every public speaker can get lost. At her age, it is impressive that she keeps it together as well as she does.
What I do wonder, is how she is keeping the top chair in the majority party. That could very well be the result of either a very real or metaphorical deal with the devil.
If metaphorical, I wonder who “the devil” is in this case, and what the full details of the deal are.
Then she stays up late, and parties every night, because she sounds like that all the time these days.