Final answer:
The question seems to be about characters named Jeannette, Brian, and their mother from a work of fiction, but the provided text excerpts do not give enough information to accurately respond regarding the mother's actions with a treasure.
Step-by-step explanation:
The question pertains to a fictional context, likely referencing a narrative involving characters named Jeannette, Brian, and their mother. Since no context from the provided passages specifically mentions what Jeannette and Brian's mother does with a treasure, one can surmise that the question might come from a literary discussion, possibly discussing plot details from a novel or a short story where characters named Jeannette and Brian are dealing with a scenario involving treasure.
However, with the given excerpts, no direct answer can be deduced. The excerpts provide various scenarios, including a girl named Bernice pondering her social success, the gender reassignment of one of a pair of twins, a mother discussing digging for a barn foundation, an artifact being preserved as a war souvenir, and the presentation of wedding gifts. None of these directly address the actions of Jeannette and Brian's mother with a treasure.