H4 to H1 : Travel to India in the course of processing


I am currently on a H1b visa expiring in July 2016.

My wife is in H4 visa. Both of us got our visas stamped after our 1st extension.

A consultancy firm in the US has agreed to sponsor and file H1B for my wife. I am currently in the US and my wife is currently in India for vacation.

Consultancy firm has requested her to be here in the month of Feb/march 2015 to process for her H1b.

After they have filed the H1b for her, can she go back to India before a decision is made for the H1B visa(during the visa processing) ?

please clarify…