How come Mama does no work around here?

I come downstairs Saturday morning and everybody's just laying around, wasting the day away. The kitchen is full of dirty dishes, both small (responsibility of the five year old to load into the dish washer, with my supervision) and large (responsibility of the nine year old to wash in the sink, with my supervision). So I tell them both to get up and get to the kitchen, and this conversation ensues (in Lithuanian) once I leave the room:

Daughter #2: why do only we have to work all the time and not you (Mama)?
Mama: cause I work all week, and get you bums ready for school and kindergarten besides that.
Daughter #2: but I work all week too! I have to go to kindergarten.
Daughter #1: at least all you have to do in kindergarten is play, at school I have to work.
Daughter #2: no, I have to sleep too!
Mama: get to work now.
Daughter #2: but why don't you have to work?
Mama: go ask Tėtė.

Daughter #2: I know already, it's because you're his wife.