Talk to NVC, they will guide you ...
She can also talk to the Bombay Consulate for the procedure ....
you should have filed for her together with urs as for CP she does not have to be in the US for u to file for her ...
if its just ur application then u should get late July or Early August ,,, so her coming to the US would be a waste of money (u guys may have other reasons too !) ...
Whatever the outcome, do post ur experience on this board as it will help others too !