A lady in a british movie is talking about her neighbour's death and she says: "She died by yesterday."
I have never seen or heard "by yesterday" and I am not sure if it is correct in formal English.
So my question is: Why does she say "She died by yesterday", while "She died yesterday" would be good enough.
Here is the link of movie where the sentence is used. Please see the 10:05 (minute-seconds) https://www.youtube.com/watch?v=NOsOFGG5Vc4