Her prayers have power because

Her feelings of unworthiness and less-than are surrendered to him and he heals it with his compassion and grace. He doesn’t think less of her for any lack of confidence. Her prayers have power because she prays them in his name. She prays for love and healing for others and he answers her prayers with faithfulness! She may not feel bold or good or feel the power of his name at the moment but he is strong on her behalf none the less. She learns continuously more of his truth, that she is being made like him in his perfection, the more she leans into relationship with and trust in him.