As I was talking to her on the phone, two nights ago now, she was zoning out, more out than in. If I didn't know any better I'd assume she was tired, or doing something else while we were talking that temporarily focused her attention elsewhere. But I do know better now because we've seen this before, a lot, in the months before her diagnosis.
Believe it or not, there is an upside: she has no idea. The zoning out, the mini comas, the strange behavoirs...she is neither aware nor remembers afterwards.