It's been 2 weeks now and DeeDee Goose still has not become attached to the goslings/ducklings. We have them in an outdoor run (it's hot here) where she can see them all day, and sometimes approaches to investigate, but not much more.
I put her in the run with them when she was nosing around near it, and she only ran away from them (like she runs away from our chickens).
She is a human imprinted goose who mostly hangs out with the dogs and our giant tortoises. I'm guessing she isnt interested in having any goose buddies. If she never attaches to any of these, I will probably just collect any eggs she lays and end her broody nesting in the future.