i think ur wife no longer has f1 status since her 485 is applied. F1 visa is not a dual intent as H visas.
few chats sessions relating to f1 with aos from attorney murthy
Chat User : My wife has an H-4 to F-1 change of status pending. How do I go about filling for my wife's I-485 in July?
Attorney Murthy : A person on H-4 status is allowed to enjoy dual intent, but not a person on F-1 status. Basically, upon filing the I-485, the person loses the F-1 status altogether. So before a decision is made on the F-1, the person is considered to be on H-4 status, especially if the I-94 card for the H-4 status has not yet expired. If the H-4 status has expired, then one must show the filing of the COS to F-1 to show maintenance of lawful, nonimmigrant status in order for the I-485 filing to be approved down the road.
Chat User : Is it legal to work on CPT (F-1) with I-485 pending? What are the legal options until the EAD is approved? Can one work unpaid to retain the job?
Attorney Murthy : There is no dual status allowed while one is on F-1 and files the I-485 AOS application. This is unlike the H1B and L-1 and their dependents that enjoy the benefit of the dual intent doctrine. There are potential risks in working even unpaid since presumably, there is some form of compensation possible in such cases.
Chat User : If one is filing for I-485 and has an approved I-140 and the spouse is on an F-1 visa instead of H-4, would there be any problem because of the visa being F-1 and not H-4?
Attorney Murthy : Generally, it is not a problem as long as dependent family members are maintaining their valid, legal status in the U.S. If they are not doing that, then it is a big problem. There is no dual intent recognized for F-1, so upon filing the I-485, the person cannot enjoy any incidental benefits of the F-1 status since they are lost immediately, unlike with the H1B or H-4 or the L-1 or L-2 status holders.