Her beak is also not pomeranian colour so she is likely a mixed breed.
(Pomeranian is a goose breed)
It's definitely a girl which would have suggested why she got along with the chickens straight away
What's your plan? She will need a buddy because chickens aren't good enough
jtn is has covered it real well,
she/he is lovely maybe @servpolice
can help with gender.
Here is a bit more info http://www.backyardchickens.com/a/other-backyard-poultry-ducks-quail-turkeys-geese-etc