That's the way things come clear. All of a sudden.

"Oh thanks." she says dryly, though she's smiling. She takes another sip of her own coffee, making a happy sound before she says, "Condoning five year olds laughing at their mom, are you? He'd like that. We might have to treat him to a Happy Meal before hand though. Or pizza." It doesn't even occur to her that she should've said "I" instead of "we".