My only thought right now is just to make sure the kids have changes of clothes and extra tooth brushes at my house and let her be what she is for right now.
Yes - that sounds like a great idea. It seems like you can't assume she will pack everything they need at this point so being prepared is good.
It seems very common with MLC that their memories are terrible, maybe part of the fog or the depression. That lack of attention to detail isn't that surprising, and you know that is a part of the fog since that is not typically how she is.
Don't make it into an issue with her and just be prepared yourself.
