What is the meaning of white sleep in 221g and email address to contact to embacy

My wife get interviewed at Mumbai office for f1 Visa on 05/15/2017 and she get 221g white slip and she submitted all documents on 05/25/2017 but still we don’t know what happened so what can we’re doing now

submit the necessary docs stated in white slip by email or whatever VO told her.

Have you receive a answers is you and your wife together now?