Oh, that last part can happen to anyone, really. It's even documented in the first volume of a series of French books,
Le Baleinié - Dictionnaire des Tracas (
Le Baleinié - A Dictionary of Hassles), that lists funny neologisms to talk of common, unnamed hassles. A soothing read: it's good to find out you're not alone having these problems.
Here's a rough translation of the corresponding entry:
Xu
noun
object that has been properly stored, but where?
to be xu: not to remember what one came to the kitchen for.
Anyway, I can say I was not surprised that Marigold didn't remember what she said. That's the kind of stuff panic can cause.