Snape's Wife

The school needs a new duelling teacher who can help students teach how to duel,because of what happened during the Chambers of secrets the headmaster thinks it will be good if students can duel well and protect themselves along with the DADA classes they will be taught duelling specially and for that purpose a new professor enters Hogwarts seeing whom Professor Snape's jaw hit the ground...what is the reason for that??

What would happen if the old greasy dungeon bat had a wife he loved a lot but nobody knew about it??

Has she come here for him or she has some other purpose??

What will happen when they both get their long kids back who were considered dead??

How will the students react when they come to know that the stone hearted man actually had a heart and can be a softie as well.
His wife is an indian witch with extraordinary powers......how will everyone react to it.