Grant and Lincoln's invitation

[loetar44]

Gen. Grant and his wife were invited by Lincoln to accompany him and Mary to Ford’s Theatre on April 14, 1865. Why declined the Grants this invitation? They said that they had to return to their home in New Jersey, but was that the true (or partially true) reason? Was the obvious reason that Julia Grant flatly refused to be in Mary’s company after an earlier (March 26) incident involving Gen. Ord’s wife? Or was the true reason that Julia Grant awoke that morning with a strong feeling, fearing that something terrible was about to happen with her husband if they joined the Lincolns that day? Or was there another reason than the Ord’s incident or premonitions of impending danger (if you want to believe that that last would be possible)?