My parents have permanent residency(green card) and returned back from US last year in August. Right now my mother is severely ill and still hospitalized since last month. She might not be able to recover from the infection and weakness until August and might not be able to travel to US. In that case they might lose their Green card as they don't have any re-entry permit. What are the possible ways to save the status on their Green Card even after they complete one year without returning to USA?
Please assist asap. I will appreciate all your help.