Grandpa, the most powerful man in the world,
isn’t powerful enough to love his little grandchild.
If Joe has such little interest in, or regard for the well-being of his own flesh and blood, just imagine what he thinks of you, the average American.
There’s little doubt that he knows of her. It’s the measure of the man that he acts in this way about his own flesh and blood.
She is better off without him wanting to “sniff her hair”.