Organic cigars all round.

One of my goose girls has hatched out nine out of ten eggs yesterday after only 30 days sitting.
The little uns seem fine but I can't get close to them.
One question I have is how to get the other goose to sit at the same time as she either just wanders around keeping her husband company or if she does sit she gets off her eggs as soon as her sister has babies, so that she can be aunty.
Any Ideas any one?