Disappointed to get in
The puzzle
A woman opened a letter telling her she had been accepted, and felt let down.
She wishes she had been rejected.
See the answer (spoiler)
Spoilers from here on. If you want to work it out yourself, leave this folded and move on.
Answer
She had already been accepted by her first choice.
This was the back-up she no longer needed, and turning it down means a deposit to forfeit and forms to fill in.
A rejection would have saved her the trouble.