Matthew told Harry the truth.
"So, as long as I leave Avalon, the Fairy Fountain's effects will gradually disappear?"
Harry sighed in relief. It was not a permanent change; she only needed to endure it for a while.
"How long will it take?"
Irina held up one finger.
"One day?"
Irina shook her head.
"One week?"
Irina still shook her head.
"One month?!" Harry cried. "School will have started by then!!!"
If she still had not changed back by the time school started, would that not mean the whole school would find out?!
Irina smiled. "At least one month!"
"A few weeks after leaving Avalon, the Lady of the Lake's traits will gradually fade."
"After one month, the gauzy wings on your back will disappear."
"As for the other changes to your body, it may take three to six months before you fully recover."
"It takes that long?!" Harry clutched her head, reluctant to accept reality.
Matthew said, "The Fairy Fountain's effects are just that overbearing... But to deal with the Voldemort Horcrux so tightly bound to you... only this method could do it."
"Otherwise, you would likely have to pay a far greater price."
Harry thought it over and felt that it made sense.
The Fairy Fountain had eliminated a hidden danger that could have posed an enormous threat to her in the future. If she had to choose again, she would definitely still do it.
Compared to such a massive danger, this small price was nothing.
She merely had to become a girl for a while. It was no big deal!
She was the famous Harry Potter. She was not even afraid of Voldemort, so what was this tiny hardship?!
"But..." Harry asked hesitantly, "how am I supposed to explain this to everyone else?"
Matthew gave her the