She'll like him in time, Rosinante is certain of that. Or maybe he's just desperately hoping she'll like him, because it would be a real pain if these two can't coexist when he wants to take care of Mary and yet also have Law at his side at all times now that they're no longer apart.

His gaze follows Mary as she runs over, and he smiles at her enthusiasm, which helps center him, clear some of that anguish she'd run into the middle of. The food is a welcome sight - he'll have to go out and get more, but she's made a good start on refilling their cupboards with things she likes (not enough vegetables, though - he'll fix that). But the saw, and then Law's reaction to it, actually makes him chuckle. "Wow, cool. What are you going to do with that?" he teases.

No, he's not shocked by her attraction to a bone saw, apparently. Just life with Mary.