As a FDC carer, the "norm" is usually one child under twelve months, however it depends on the actual carer and what they can cope with. I had the care of twins from six months of age, and at the same time children about 15mths of age, obviously twins won't be separated. I feel the issue here is the other baby is her own (if it was a day care child your opinion could be different) I also have at the moment a 10mo and a 7mo who come on the same day occasionally. If both cry together, it's the matter of working out why? and fixing the problem, often one will set the other off, one is easier then the other to look after generally. The younger will put self to sleep, the older needs to be rocked, cuddled, wrapped and patted. I just do what I need to do. If I hadn't m/c, my baby would have been born about the same time as one of my clients baby. (we were 3 weeks apart). Her baby would have started care at 6mo and she was quite happy to have mine with hers. Her son is now 2y9m (he started with me at 9m) I guess this is an individual/personal decision and you need to do what is right for you. If you're not happy ring your scheme, explain why and ask for another name(carer) to visit. Sorry if this upsets you in any way, i'm just explaining what I feel. Good Luck with whatever decision you make and I hope you find a really special carer.