"Well," she says a little wryly, "after some of my disastrous attempts in the kitchen, I'd appreciate the offer." She's serious about that; she's managed to blow spaghetti sauce. It's not a lack of skill so much as it's a lack of wanting to try.

Cooking is just so domestic and mundane. (And she knows that taking care of plants could also be considered as such; there's no rationalization for it.)