How soon can they hatch 2nd set?

[Lil Ts Chicks]

My Silkie had 4 chicks June 6th. How soon can she sit with another bunch of eggs? Counting her I have 3 more hen's laying like crazy, I know they will hatch. What do I do? The other hens are not taking much of an interest.

ASAP Any Help

 

[Judy]

Whenever one of the m goes broody.