Lapsed Green card

[mlchandana 0]

My mother is a green card holder. She was suppose to return to the States on May 15th 2020, but had to stay in India due to lock down and flight cancellation. It's more than a year since her last visit to the United States due to the unavoidable circumstances. Will the Homeland security show some lenience if she presents with the unused return ticket itinerary at the port of entry or should we go through the whole process of returning  resident visa? Please guide me through.