The food and kiddies can be a problem. Mine (and I have several with my different families) with the food is that if the family doesn't get there fast enough she is putting it away and they stand there stomping their feet and yellinlg. I have to send them to the fridge then for leftovers.
Did have one where she took food out, but she put it right back in. I thought she was going to eat a meal, but she just set it on the counter, looked at it and then put it back into the fridge. She did this randomly, but she always puts it back in, so I ignored it.
With the babies and toddlers, I just dismiss her, move her coffin to another area; I sometimes put walls around her, just enough to close her in. If there is enough money I hire a maid, if not, then the family has the chores.
It is random on getting a good one or a pain in the rear one. I've have a couple that I just had to "returned"
and got another one.
Did have one that finished cooking a meal twice, but I am sure it was a fluke, they were normal, and simple meals, waffles and mac and cheese I think was what was being fixed. Had to send the sim somewhere and she just went over and finished the meal.
I had been hoping that she would do it more often, had the sim walk away hoping to get her to do it, but just that couple of times.