I've never dealt with a bantam hen and I've never dealt with a hen raising babies. 
I'm going to have them separate for a couple of weeks from my flock. So i have a little bit to figure out how im going to go about that but i have other questions.
I have 5 full grown hens, will one bantam be okay with them? I know it will mostly depend on personalities but do the two sizes typically do okay mixed? I already planned on getting chicks next spring so i might end up finding new homes for these guys, I just want to get them through the winter.
She hatched the babies so are they 100% bantam as well? I have no idea the breed or ages. I haven't even seen them yet.
Is grower feed okay for chicks under 8weeks? I just bought 100 lbs of layer feed. :/ So i was thinking grower feed for mama and babies since they'll be alone for awhile. I have oyster shell i can give her.
As soon as I said I'd take them (owner can no longer care for them) I started freaking out :/

I'm going to have them separate for a couple of weeks from my flock. So i have a little bit to figure out how im going to go about that but i have other questions.
I have 5 full grown hens, will one bantam be okay with them? I know it will mostly depend on personalities but do the two sizes typically do okay mixed? I already planned on getting chicks next spring so i might end up finding new homes for these guys, I just want to get them through the winter.
She hatched the babies so are they 100% bantam as well? I have no idea the breed or ages. I haven't even seen them yet.
Is grower feed okay for chicks under 8weeks? I just bought 100 lbs of layer feed. :/ So i was thinking grower feed for mama and babies since they'll be alone for awhile. I have oyster shell i can give her.
As soon as I said I'd take them (owner can no longer care for them) I started freaking out :/