When I had geese and ducks the goose hatched out just one baby and they are rubbish mothers when the golisngs are very young, so he/she was put under the lamp with some baby ducklings, and they all grew together.
When he/she was a bout half grown he went back into the goose pen, and always wanted o get back to the ducks, even when he/she was grown I would sometimes find them together, so yes they can get on. To be certain it was a girl you would need to buy a sexed gosling form an auto breeding strain, Not many about, but they are the quietest and most placid of the geese.