Looks like she is going to be a mama. So excited for you.
AND
One thing you might want to give is give her privacy drakes can kill ducklings and we never know which ones would attempt it. Giving her her own space without her drake is always best since when ducklings are hatching the first ones can wander while mama is still brooding and that can mean they are vulnerable to the drake. I usually let mama and ducklings have a few weeks separated but where everyone can still see each other. Then gradually start letting the mama and ducklings be around the drake with supervision.