JayUtah
Penultimate Amazing
Not telling everyone does not preclude telling someone.
And clearly the subject was not so taboo that it won't come up at a family gathering in which presumably a large number of family members were present. Unless I recall incorrectly, Scorpion tells us his mother never discussed the subject after the initial engagement in the kitchen, just following the reading. The degree to which Mom was tight-lipped seems to vary depending on the needs of the story. The story suddenly acquired the need for a close relative to demonstrate no prior knowledge of the incident. But that requires the subject to come up, so that the uncle has a line to say in the drama. This is normally where the creative writing teacher would note the inconsistencies in the plot exposition part of the story and suggest a rewrite.