This is Grandma. Mover and shaker of her world. Quite often without people realizing they're being moved and shaken.
This is her son-in-law. Too often left wondering whether he's been manipulated or not.
This is grandma's new ... companion. The son-in-law is suspicious. Grandma seems oblivious to the fact that he's manipulating her. Or is he? Who really has the upper hand?