I'm sorry that I cannot answer your question with a definite answer. Your Sarah Collins could fit into a number of the local Collins families. Her age would fit in closely with some of my most distant known Collins ancestors, George Sr. b. ca. 1750, and sons George Jr. b. ca. 1770, and James b. ca. 1770-1780. But I have no doubt that she would probably fit age wise into some of the others in the area also. I saw in the 1810 tax list of Loudebacks Company there is listed James Cox and also Tabitha Cox but I don't know that this puts them in anymore close proximity of any particular Collins family. I'm sorry that I can't be of any more help. If I should ever find out more information I will keep you in mind.