"And eventually teach it," Billie reminds him, but the rest of that, she can't help but shake her head and lounge back against the stairs again. Strange has proven by now that he isn't going to accidentally fling the knife back her way, so watching it is.

"What? Is that all? You're not juggling five more other projects on top of that?"

It's also not her place to mother him. If he wants to work himself to exhaustion, he will, short of her putting him down herself and that sounds like a lot of work with very little reward to her. Not that she likes to hear it, but suggesting anything else would make her seem like an actual friend.

Which would be terrible.

What she can do is make fun of him for it, though.