After Harry told Ron and Hermione all about the goblet Snape bought Lupin, he didn't expect their lack of reaction. Instead the two began glancing at one another, then looked over towards Mayumi.
"Well..." Ron started, "Is it really not poison, Mayumi?"
"Oh rest assured." Mayumi waves dismissively, "It's not."
"...Alright." Hermione sighed in defeat, "We'll trust you for now."