B1/B2 Visa only one stamped 2nd refused for further processing

Applied for re stamping of B1/B2 visa for me and my wife both senior citizen, through drop box at Visa Application Center, Bangaluru on 9th February’22
One, My visa was stamped where as my wife, Savitri Ahelleya, visa was refused owing to further processing.
Request suggestion/advice as what needs to be done hence forth.

Was she given 221 g ?. What does the accompanying letter say ? Or was passport simply returned without any letter?

Yes it was 221g and the accompanying letter said VISA REFUSED owing to further processing and the passport was returned with out Visa Stamping.

You have to wait for the result of further processing.