Other mistake: When Blanche gets her citrus plate in the mail, she receives it in a box. She takes it from the mailman and it shows a normally taped up package, yet she just lifts open the flaps like they aren't even sealed.
Continuity mistake: At Big Daddy's (Blanche's father) funeral/passing, Blanche shows Dorothy around her childhood home but it was revealed in season 1 episode 24 that Big Daddy had sold the property to pay for a music tour and to escape the constant reminder of his late wife, the house was named Twin oaks.
Chosen answer: Yes, you are correct, as stated, In one episode Blanche said he had been in a coma for days, in the episode where she's in her dream, she said "The day you died ... The police told me you had been in an accident." Thus the original answers theory is wrong. If he had been in the accident the day he died he could not have been in a coma for days.
Valentine
Yeah, in another episode she relates how a thoughtless state trooper phoned her and told her that her husband was dead with his mouth full.
Brian Katcher