Premise: Though Wilson was unmarried, dating another woman so soon after his wife's death seemed vaguely scandalous in 1915, especially because, as Starling discreetly put it, Wilson was afraid another woman--a Mrs. Peck, whom the President had known years before--would make trouble if an engagement were announced.
Hypothesis: Wilson's wife died when she fell down an out of use elevator shaft. 
Label: neutral