"It's alright, I'd forgotten about them too," she says as she pats Rosie's back. "And really, they're my responsibility as the person who's actually employed by Bart's."

Really it's him who is her responsibility. He's been given a ton of leeway there thanks to his brother, but for years Molly has been his unofficial minder (at least that's how the rest of her department sees it).

Although, if things keep going the way they have with him, she may be out of her unofficial job. He's actually concerned that he's putting them out by forgetting about his experiment and he's even going to remind himself to see to it. Old Sherlock would have either ignored her or waved her off and she would end up cleaning his mess. She feels like maybe she should have given him a handjob ages ago.

She almost laughs at her own awful, internal joke before he punctuates everything with the most sincere thank you she's ever been given for doing something really rather small. It makes her blush. A thank you. She doesn't know how he does it.

"You're very welcome, Sherlock," she says warmly in return.

Rosie chooses that moment to let out a burp that could come from a much larger human and Molly laughs.

"Oh, good one, baby girl."