On the morning of Thursday, November 3, 1842, Abraham dropped by Reverend Dresser's home. The Dresser family was still at breakfast when Abraham announced, "I want to get hitched tonight." Reverend Dresser agreed to the arrangement.

http://home.att.net/~rjnorton/Lincoln49.html

After leaving the Dresser residence, Abraham happened to meet Ninian Edwards in the street. He told Mr. Edwards of the plans for the marriage. Mr. Edwards replied, "No, I am Mary's guardian and if she is married at all it must be from my house." When Elizabeth Edwards was informed of the plans, it was decided that the marriage would be delayed by one day as the Episcopal sewing society was meeting at the Edwards' home that night and the supper had already been ordered.

This account would seem to indicate that Mary and Abe's on again, off again relationship was rather impulsively decided by old Abe. There is no indication from this account that Mary had much to say about her wedding day.

Not to suggest too much but Abe and Mary's first child, Robert Todd Lincoln, was born just barely 9 months later on August 1st, 1843.