I like to support my broody moms with shallow dishes of chick feed and water very close to her, within a couple of feet or as close as six inches, depending on the size of the enclosure where she's brooded/hatched the babies. A regular chick water is fine; with momma right there, there is little chance a chick will drown in the water dish.
I have a whole slew of chicks all over ny chicken yard right now,with fussy moms escorting them and training them, clucking and puffed up, wings held out and tail feathers spread to warn other chickens away from their broods.
Babies and mommas are safe in my flock, so I no longer worry about roosters or other hens harming them. Those momma hens are very fierce and protective, as is the dominant rooster.
Good luck with your - there is nothing quite as adorable as momma hens with new chicks!
We WILL want pictures, you know....