I reviewed your posting history, there are other threads with responses and data you haven't included here. Has the data in those responses proved true?
This post doesn't have good detail to help you with your brickwall. Detail (dates and locations) and a timeline will help others understand where to help you.
>In several city directories it lists Carrie as a widow of Alexander.<
It was not unusual for divorced or women abandoned by their husbands to cite themselves as a widow.