This ambition structured everything. It structured how the children were raised, what was expected of them at the dinner table, how their achievements were discussed, and how their failures were managed. In a family organized around public achievement, a member who could not achieve in the ways that mattered was not simply a private family matter. She was a potential liability.
It is worth being careful here about overstating this argument, because the available evidence does not fully support a reading of Rosemary’s situation as purely a political management problem for her father. The family clearly loved her. Her brothers escorted her to dances. Her mother wrote affectionately about her. Her sister Eunice retained a bond with her that lasted her whole life. The Kennedys did not put Rosemary in an institution when she was a child; they kept her in family life with considerable effort and expense for more than two decades.
What the political dimension of Joe Kennedy’s motivation seems to have contributed was an intensification of the pressure to resolve the Rosemary problem definitively — to find something that would close the chapter — rather than accepting that her situation was simply what it was and would require ongoing management for the rest of her life. A father with different ambitions might have concluded that ongoing management was simply the reality and that living with it was what family required. Joe Kennedy, by available accounts, was not a man who accepted what could not be changed.
The neurosurgeon James Watts’s statement — that he believed Rosemary had depression rather than intellectual disability as her primary condition — is worth returning to here, because it adds a dimension to the medical history that is important and underreported. If Watts’s retrospective assessment was accurate, or even partially accurate, then Rosemary’s situation in 1940 and 1941 may have involved a mental health component — mood disorder, anxiety, or something else — layered on top of her baseline intellectual disability. Her angry outbursts, her nocturnal departures, her escalating volatility may have reflected a psychiatric condition that was amenable to treatment rather than an inexorable worsening of her intellectual disability.