The only possible explanation is clerical error, the dates as such are correct, checked the original records, which are not misplaced in the record book as to dates.
There existed another couple Bourassa/Boutin in the area at the time, but they cannot be the parents of these girls, as the woman in that couple, Marguerite Boutin, died in 1826.
So which record has the actual error is up for grabs, I don't see further mention of Audile in this family.