The key thing here is if they came back to me. God welcomes back anyone who comes back to Him. But He can’t force anyone to come back.No, of course not. But I would always be willing to welcome them back with open arms if they came back to me. There would never be a point where I would say “We are done”.
I think a concept that people fail to grasp is that God doesn’t send anyone to hell. People choose to go to hell by turning their back on God.