She couldn't bear to see the old folks lonely with no one to lean on.
Tips
usage
孤苦 is more literary/emotional than 孤独 (gūdú, 'lonely'). It carries a stronger sense of hardship — not just being alone, but suffering because of it. Often appears in fixed phrases: 孤苦伶仃 (alone in the world) and 孤苦无依 (forlorn with no support).
memory
孤 = 'orphaned/alone' + 苦 = 'bitter/suffering'. Literally 'orphaned-bitter' = a life that's both lonely and hard.