So presumably one child was in daycare and they were paying $1600 per month. They had twins and knew they couldn’t afford three times that, so they moved, and are paying $1800 - $2100 per month. That math does not add up. Stay home, mom! Save $1600 per month!
...and, if she would baby sit for one kid she’d have everything she has now and have her kids know who mamma is!