After Frozen, Triplet Sons Regret

Rowena is Rose's mother, and she works on Rose's three sons for months before Rose's fiftieth birthday, telling them things that turn them against her. Rose had believed her triplets died at birth. She adopted three boys and raised them for twenty years. On the birthday the sons freeze her out, and the pet is killed. Rose has herself put into cryogenic storage. Afterward the sons find out what Rowena did, that Rowena could not have children at all, and that the three of them are Rose's own sons. They also learn she had donated her corneas. They spend thirty years with that. Rose wakes up with no memory of them and meets three grey-haired men she does not recognise, and keeps her distance.