Apprehensive

I see mom two to three times a week depending on my work schedule. I like to stop in on my way to work.  Works out nicely.
So I stopped on Tuesday.  On Thursday we have plans to go shopping and have lunch.  On Tuesday she was having a bad day.  She couldn't figure out where she was in time and space.  She needed to use the restroom and didn't know where it was.  She was thirsty and couldn't see any clean glasses because of all the dirty glasses.  There were no glasses on the table.  She knew she was having a bit of an odd day. 
It's hard to see her on days like this.  She hasn't really had a bad day that I've seen for awhile.  We appear to be past the rages and just go on our days sleeping or doing the activities in the cottage.  So it was odd.  And probably not....she probably has these days and I just miss them.
But it makes me apprehensive as to how Thursday is going to go.  We have had many plans for shopping that don't happen.  And if I had to judge by Tuesday I would guess Thursday is going to go like that. 
However when I got my sagely email that tells me what activities she participated in today she was active.  So maybe it was just a fluky day.  Still hard when we know this is where it is all heading.