Gaurav must have come back soon after K-R marriage was broken. He could have apologized and since he helped Kunal out of jail, he may have been forgiven first by Veena maata of course and slowly, entire family must have accepted him.. Seema being the last one to accept him. Anyway, its been 9 years since then and there is no point in showing him guilty of his actions now. I hope they show a small FB to show how Gaurav gained entry into the house.. again don't want elaborate stuff.. only a scene or so is enough..
Anyway, yes Shumi, glad Gaurav is back where he should be.. despising his brother for being so careless and worrying about all the financial responsibilities!!