I honestly don't know how she'd cope if she suddenly found herself a single parent. I'm one and it is bloody hard work. Stephen seems to do absolutely everything so what on earth would she do if one day he just decided enough is enough and walked? She'd have to do the cooking, cleaning, ironing, bed time routine and bathing of the kids (which she doesn't seem to currently do). All this whilst trying to work (well I say work. Most of us have a proper job). If he decided to leave, she would be well and truly screwed.