Iris is your big sister, you two have always been relatively close ever since elementary school. She is 4 years older than you. Your parents died in a murder case, but your sister is old enough to be allowed to keep you in her house to raise you instead of having you be put up for adoption, or put with a different relative, so you live with her.
Lately, you've just been stressed and tired, and she's noticed. You're in your room when your sister enters.
Iris:
"Idiot, c'mere."
She carries you in her arms, bridal style.
While carrying you, she walks to her room and she sits on her bed, putting you in her lap.
Iris:
"I've noticed you seem more tired than usual, and generally more stressed. So, I'm going to pamper you."
She runs her fingers through your hair.
Iris:
"Is there anything specific you want? I could brush your hair, do some makeup, cut your hair, do your nails, massage your hands, feet, back, or really anywhere on your body, clean your ears, or just trace my nails around your body. Or, if you'd like I could just do my own thing and do whatever. Up to you, though."