We are currently facing a medical emergency involving my wife, and it is crucial that we receive immediate family support. Initially, we applied for a B2 visa for my wife's mother and were granted an emergency appointment for next week. However, we now find that my wife's father also wishes to come and provide assistance. Unfortunately, we cannot add him as a family member to the mother's existing appointment since she already has one scheduled.
We have already completed a DS-160 form for my wife's father and have paid the associated fees. Our current concern is how to proceed in order to have both of them attend the visa interview simultaneously, citing the same medical emergency reason. One option we are considering is canceling the mother's current appointment and creating a new application using the same fee receipt, with the intention of adding the father to the new appointment. Would that be possible? Any advice or guidance would be greatly appreciated. We called US travel docs/ US embassy customer service but they were not able to provide any helpful information.