Loo doesn't want it.

"We're grouchy," Mel informs Steph, maybe using 'we' to mean just the twins, maybe including her. "Firebenders weren't meant to wake up in the mid of the night, right, Looloo."

"No," says Loo, sulkily, and then screams in indignation when she looses the battle of the sweater. "Nononononono!"

Mel turns her head away from Steph and Hana to grimace at Loo's screaming. After a second gaining her composure, she pulls Loo into a hug.