The son of her daughter, Leia Organa, and Han Solo, Ren has definitely inherited his stubbornness and passionate nature from his grandparents and parents both. He's also extremely angry, reminding Padmé far too much of Anakin in the last weeks of her life to make her comfortable, even without actually knowing their relation.

Despite his utter lack of desire to speak to her once he knows who she is, Padmé refuses to give up on him. She has as much faith in Kylo Ren's goodness as she does Anakin's and has just as much vested interest in seeing him embrace it once more.