Can a goose sit on runner duck eggs?

[The goose girl]

I'm thinking about letting my goose sit on some runner eggs. But is she too big for them - will she squash the eggs or the ducklings? Are there any other problems that may occur if she raises them?

She's a 13-pound White Danish goose.

 

[8GeeseALaying]

My goose hatched chicks last year while sitting on her own eggs, i took them away once they fluffed because she had 8 or 9 days left for her eggs. Shes a roman tufted.
i would think the runner egg shells would be a bit stronger than chicken egg shells, i never had a laying runner so i dont know.