how do I get her to lay in the nest box,

My bantum has laid her first 2 eggs but they have both been layed in the hutch, she has a lovelly nest box but has never been in it, how do I persuade her to use it?

I've got 4 who are getting ready to lay, in fact two of them have in the last couple of days. I watched them scratching around a bit as though trying to rake up a bit of a nest and then settled down in it. When they had, I popped them in the nest box which, touch wood, seems to have worked as both eggs were laid in it.

Tazzy