At the end, did MTL have a sense of vindication

[Juan Marrero]

That's right. Mrs. Kennedy said that, if her husband had to be murdered, she regretted that it was not for civil rights, rather than by "a silly, little Communist". Consciously or not, she was in line with the Johnson Admistration's efforts to downplay Oswald's Communist affections, particulary for the Castro regime. No one wanted WW III.

Mrs. Lincoln, by not accusing the Confederacy and J. Davis in particular as being de facto co-conspirators, also helped avoid further bitterness. Her silence can be taken as admirable discretion by one whom could really have made a national scene at that juncture.

I find it interesting that late in her widowhood she travelled to Florida for a "cure", traversing the Deep South by herself. Even if travelling under an assumed name, she manifested a lack of resentment towards the South and, also physical and moral courage.

She doesn't get half the respect she deserves. Mary Lincoln: "Frequently wrong on the small things; mostly right on the big things."