Nobody will know it at any time
So unobtrusive. This individual should be employed by the FBI. This gifted individual has a keen sense of intuition and a keen understanding of how to keep things under wraps.
Using the person’s name, without a doubt, would have been far more alarming. Alternatively, you can use any name you want. “Aunt Phillis” would have been our first choice, but it sounds a lot more suspicious than the final option.