The woman can go crazy or commit suicide. But, Rena couldn't let things be like this. Because Brian and Elise together will only make them suffer.
Brian's feelings for Elise are not love. And a marriage that is not based on love cannot possibly be happy. Plus, she felt that Elise's feelings for Brian weren't love, but an addiction that almost resembled an obsession.
Also Dean, her beloved grandson, needs love from both of his biological parents. Even though Elise loves Dean, her affection cannot match the love of Dean's biological mother, Elena. Because blood is thicker than water.
But how can rena make Brian divorce Elise, and not make Elise traumatized or injured? Rena must think of a way. She has decided she will do whatever it takes to unite Dean with his birth mother, Elena.
Thinking of Dean, made Rena think of her deceased grandson's twin. A grandson whom she doesn't even know exists if she doesn't ask Aiden to investigate Elise.