When nothing happens to relieve the situation, you can say, forthrightly, I'm so sorry, your name has gone right out of my head.
When you can't make it better, just apologize for forgetting her name
mnli hypothesis: When you can't make it better, just apologize for forgetting her name premise: When nothing happens to relieve the situation, you can say, forthrightly, I'm so sorry, your name has gone right out of my head.