Harry and JoAnna stayed up practically all night writing the letter. Finally, they came up with this:
"Lord Voldemort,
Potter has had an accident. He fell off his broom extremely high up in the air while playing Quidditch. He has fallen into a deep coma and is very vulnerable to attack. If you have any orders for me, tell me so I may carry them out quickly.
Your obedient servant,
JoAnna Bouchar"
"There. Perfect," said Harry. JoAnna sent it and awaited his reply.
She did not have to wait long. It came five days later. It said,
"This is extremely good news. I wish you to wait for the right moment, then kill Potter. I will reward you justly for this task. Let me know when it has happened."
"What did I say? He is obvious enough for me to know what he'll say," said Harry.
"I guess you're right."
That night, JoAnna was in the common room doing homework when an owl was tapping the glass of the window. She let it in and it dropped a letter at her feet. It said,
"I am sorry for that fake letter earlier, but I had to take precautions. My real orders are to send me a letter on the day of your last O.W.L. I will await the letter then send further instructions."
"Oh no." Their plan had failed.