We've kept names private; the stories are real. These aren't rare events for us. They're what our guide ratio is for, and it has paid for itself many times over.
The couple who split, and met again. More than once, a couple has set out to climb a 6,000 m peak together, and high on the mountain one of them couldn't go on. Where the leader judged the group could split, a guide brought the one who stopped down safely to the base town, to rest and, if needed, see a doctor. The other carried on with the team and summited. Then we brought the recovered partner to the end point to meet them. One with a summit, one with a recovered body, and both safe.
The climber taken down at dawn. On summit night, a climber's body said no: a hard night, and signs we don't ignore. One guide walked them down to a lower camp at their own pace and stayed with them. The rest of the team went on with their guides, summited, and came back to find their teammate rested and recovering. Nobody's summit was lost to someone else's bad day.
The slow climber who still stood on top. On a long summit day, one climber was slower than the others. With a guide free to stay at their pace, the faster climbers could move on, and the slower one kept going, steadily, and reached the top too. One guide per pace, not one pace for everyone.