I believe I do have a timeline of events that you might find enlightening.
Deborah is visiting her father, Jerry. Jerry’s ability to express himself is affected by aphasia. Deborah is supportive in helping him to communicate, but can’t quite suppress a giggle when he says “backwards and forwards” instead of his usual “onwards and upwards”.
The two are attempting to play Scrabble. However, after Jerry plays HVRAST (which he pronounces “hockets”), Deborah is able to convince him that he is not yet recovered enough for the game.
After Jerry is able to sing the first line of We Plough the Fields and Scatter, Deborah realises that the word he was trying to play was HARVEST.