"Fred, George," Mayumi said nonchalantly, the day before Hogsmeade, "You're planning to give Harry the map, right?"
The twins shared a look.
"Um,"
"Make sure to tell him about his dad, 'Kay? He see serve to find out sooner— Please don't mention me at all, though."
Judging from the greatful looks sent her way while they were in Hogsmeade, they did.