"Rin," he began taking her gently into his arms, "I love you and you will always be my little girl." He then paused and sighed when he realized she still didn't grasp it. Finally, he settled on explaining via example.
"You know how you love your Grandmother and me?" Rin nodded and he continued. "But you love them both the same and you want them both to love you forever and stay with you forever." Picking her up, he placed her in his lap before he continued.
"I love you and I love Kagome. I want you both in my life and I need you both in my life. I can't lose you Rin." The little girl looked up at him and he sighed before continuing. "I hope I don't have to lose Kagome either." Tears welled up in Rin's eyes and she snuggled into her father.
"You won't lose either of us daddy." He smiled at her and cherished this moment. Sometimes he forgot she needed this just as much as he did.