Clearly, she must be a descendant of Charles LeCompte (1749-1822), most likely through his son Issac (1788-1826) who married Rachel Banta, or his son Joseph (1791-1851) who married Margaret Morrison Mitchell.
Issac's eldest son Charles Mansfield LeCompte (1811-1853) married Susan Powell, according to Revised History of Dorchester County Maryland by Elias Jones, and they had a son named Joseph. Seems likely they may have had more than one child, and perhaps they had a daughter named Susan (pure speculation).
There are many LeCompte families in Henry County belonging to this branch of the tree. Charles of 1749 is reportedly the son of Robert Winsmore LeCompte, son of John LeCompte, son of Anthony LeCompte (immigrant ancestor). Unfortunately,although I have recorded over 100 descendants of Charles, I don't readily see who your Susan may be. If you have more info please share. Very intested in all LeCompte information in Henry County, KY.