I would ask myself...why is she wanting to lay outside?
Is it crowded in the coop/nests...how many birds to how much sq ft and number of nests?
Do you free range?
Free range birds sometimes need to be 'trained'(or re-trained) to lay in the coop nests, especially new layers. Leaving them locked in the coop for 3-4 days(or longer) can help 'home' them to lay in the coop nests. Fake eggs/golf balls in the nests can help 'show' them were to lay. They can be confined to coop 24/7 for a few days to a week, or confine them at least until mid to late afternoon. You help them create a new habit and they will usually stick with it...at least for a good while, then repeat as necessary.