Hi SasiOma. Welcome to G2G!
One way to start would be to place a comment on the profile of Wilson-15966 describing the issue, so that the profile manager will have a chance to respond. In the comment, you should list the sources that underlie your thinking.
If the profile manager doesn't respond, say within a week, you can proceed by yourself. If I understand what you've said correctly, then you would add Ann Taylor Schenk Wilson as a second spouse for Wilson-15966 by using the "add/remove" spouse link. Then if necessary you can change parentage with "replace/remove father" or "replace/remove mother".
I hope that it goes without saying that everything you do should be based on solid sources, which you record in the profiles.
Please don't hesitate to come back here and comment on G2G if you have further questions.
