I am renewing my H1 visa. Last August I filed 485 last August together with my wife, but she didn't apply for H4 visa at that time (still F1). She has plan to travel to Europe this summer and she already got the Advance Parole (AP), can she come back to US just with her AP? Because I heard her F1 visa become invalid after filing 485. If she can not come back with her AP, should she apply for H4 visa with me this time? Thanks.