Fantasy Samverse: Samantha & Chai Novel - Ayurvedic Treatment For My Wife

[Silverstone93]

Past is the base of your present and present decides your future. 

Grandpa is the one who planned Sam and Chair's marriage. And one of the qualities he expects is "loyalty" from his grand/daughter in law. Looking at last chaps, there's nothing like "loyalty" in Sam's present actions. She fucked some random shopkeeper while keeping her husband in dark. But, her "loyalty" is towards the person who orders her. 
Sam raised in orthodox family and never had any contact with boys during her college, college years. And now, she is having sex with random person like it's nothing. She doesn't even hesitate to do that in front of her husband. 
Does she not afraid of Grandpa? Doing something like this without Grandpa's fear is somewhat bugging me. 
Chai is from big family and only son. Why his grandpa insisted him to get married to a girl from middle class? Is Astronomy is the only reason? Does David has courage to fuck Rao bahudur's Grand DIL? 
One thing for sure, whoever ordering is more powerful and influential than Grandpa and doesn't fear him or is that person is Grandpa himself?