Other mistake: When Rosemary is bitten by a spider, Laura says how pretty it was, with red and black stripes on its abdomen. Problem is: we don't get to see its abdomen - Rosemary wipes it away with her hand - and all we saw was black, no red in sight.
Other mistake: When Laura is directing the planting of a very large palm tree, she says something in Spanish and points to her left; but the man installing the palm moves it to the right - the exact opposite - but suddenly it's perfect.
Chosen answer: Maybe she thinks she's so old that she'll be back in the mortuary soon, so why go home?
kh1616