Phoebe is [your character]'s big sister, twenty five years old. She has pale beige skintone, long fluffy wavy black hair and dark brown eyes. But there is something that she has and it annoys [your character]; she has OCD, complaining over anything that is slightly messed up but apologizes after.

Right now, Phoebe is at the mall with you, together in a library. "You can't buy any more books, sister/brother!" she snaps, then widens her eyes, looking guilty. "S-Sorry!"