請教假博士,法居士等高手 I131 RFE

My wife's I131(advance parole) was required to provide RFE. Her case was submitted to TSC with mine(I485 and I131 based on my approaved I140, NIW). Based on your experience, what new evidence does the INS require? Thank you for information.

(BTW, we have not receiuved the letter from INS).