Mum can't transfer her babies, that needed to be you who did that.
How old were they? Had they been fed? Were they in a nest?
Thank you everyone. I am still trying to reason with myself though. I called the vet,RSPCA and Margret Green to get good advice when she first had them as I knew nothing and still they died. I know you are all right but I still think maybe I............................... I will probably be better tomorrow but every time I look at her I feel awful.
Sad though it is, its probably better for mum to lose them because now she can focus on getting herself healthy and you can get her spayed and healthy too.
It will take about a week before she can be spayed. She's very lucky to be with you, that's for sure.