Marked Nominative Puns

So there's a girl, who just graduated from High School as an honors student but just a few A's away from making Valedictorian. After her graduation, her father walks up to her and says "you've let me down."

The girl goes to medical school. Once again, she graduates near the top of her class but isn't the top of her class. The father walks up to her and says "you've let me down."

The girl was nominated for a big promotion in her hospital but was just a few marks away from securing it. Her father walks up to her and says "you've let me down."

Years pass. The woman has grown to hate her father. One day, she receives a letter saying her father had passed away. Forgetting all of her hate, she gets on the next flight to her mother's home.

As soon as she arrives, her mother hands her a letter detailing one final request from her father.

"At my funeral, I would like to have my daughter lower my body into my grave so she can let me down one more time."

EDIT: Grammar, wording, etc.