“But the children struggled in her womb, and she said, “If so, why do I exist?” She went to inquire/ demand / questioned of Adonai our God.”
Rebecca is the first person in the world who dares to demand, question, and inquire of Adonai. She is not happy with her situation, and she demands answers.
She starts a Jewish tradition of not settling for difficult situations. “It is what it is” is not a Jewish value, we strive to fix and make the world better.