Heather dangled limply in Mel's arms as she was carried from the rocking chair to the changing area. She didn't resist as she was laid out on a padded surface and the front of her diaper was untaped and pulled open. When her legs were lifted up so the sodden padding could be removed she barely noticed. It was only when she felt something warm and wet sliding between her labia that she regained enough sense to look down.
Mel had planted her face between Heather's thighs and was enthusiastically licking her clean. Heather moaned and tried to close her legs, push Mel away, anything to make it stop, but her body was once again refusing to obey. Mel licked her way around her inner thighs and up across her pubic bone. Every once in a while she would drag her tongue up her slit or give her clit a quick suck. Heather whined in frustration. Mel was teasing her.
Heather endured Mel's lips and tongue for what felt like hours. Every time she felt like she was getting close to the edge Mel would go back to licking her thighs again. Finally, when there was no doubt that Mel had gotten any trace of pee still left on Heather's skin, she attacked the poor girl's clit, lapping and sucking as if her life depended on it.
Heather let out a loud sustained groan. Her thighs finally began to obey her again and clamped together around Mel's head. Her groan scaled up into a squeal as Mel struggled to keep her mouth locked to Heather's lips. Then, as her orgasm peaked, her bladder gave out and she began spraying jet after jet of hot urine onto Mel's waiting tongue. Mel held on gamely, drinking down every last drop. She didn't stop sucking until the last aftershocks of Heather's orgasm faded.
Mel stood up, breathing heavily. She gazed down at her friend, lying with her legs spread wide, her swollen pink pussy lewdly on display. She bent down and kissed Heather on the lips again, slipping her tongue in so the half-conscious girl could taste herself. She straightened up quickly at the sound of clapping from behind her. She spun around to see her mother applauding the performance. She blushed and smoothed down the front of her apron.
"Well done." Gabby said. "Now hurry up and get a fresh diaper on her before she makes a real mess."
Mel nodded and turned back to the table. She grabbed a diaper from a shelf above her head. It was one of the extra thick ones made for heavy nighttime wetting. In moments she had Heather securely taped into it. She felt her mother step up behind her as she was adjusting the leg gathers. She jumped when she felt a finger slide along her well-lubricated inner thigh.
"I think," Gabby said quietly, "You should take a little break to sort yourself out now. I'll put Heather down for a nap while you do."
"Thanks." Mel breathed, and rushed from the room.
Gabby watched her daughter go. She noted the glint of steel nestled between the girl's pale ass cheeks as she stumbled through the door to the lobby.
"That girl is trouble." she sighed, and looked down at Heather "And so are you, for that matter."
Heather didn't respond. Mel had left her so drained that she could only barely remain conscious. Gabby smiled, then leaned down and gave her a kiss on the forehead.
"Thank you for being such a good friend to my Mel." she whispered.
Gabby lifted Heather from the changing table and carried her across the room. She lay the half-asleep teen in one of the cribs against the far wall. Heather mumbled incoherently and shivered a bit. Gabby grabbed a blanket and tucked the exhausted girl in. She found a pacifier in one corner of the crib and slipped it into Heather's mouth. Heather accepted it without any fuss and was soon fast asleep. Gabby kissed her forehead again, then went to deal with her daughter.