Grant and Lincoln's invitation

[LincolnMan]

I don't think I've ever read that Mrs. Grant had any sense of impending tragedy about the evening of the 14th. Many do claim that the incident involving Gen. Ord's wife was the "last straw." Didn't Mrs. Lincoln have a confrontation with Mrs. Grant besides? Or was that during the Ord incident? Mary Lincoln scolded her for having aspirations of becoming the wife of a President (U.S. Grant). The accusation didn't make sense really- how would that have any impact on Mary anyway?