Disclaimer: I don't own Harry Potter.
A/N: I am aware Mrs. Dursley sounds out of character.
Petunia Dursley sat on the bed of her son's second room, one where he kept all the things that didn't fit in the first. In her hands was a box that not even her husband knew about. It had all the pictures of Petunia and her sister, Lily, when they were children and had gotten along. She had nearly forgotten about it until she woke up from a dream nearly one hour ago.
In her dream she and Lily were playing on the swings of a playground that was near their old childhood home. It was three years before Lily found out she was a witch and went to Hogwarts. They talking about getting future husbands and babies when all of a sudden Lily got up from the swing she was on. She had a sad expression on her face as she looked toward the sky.
" Tuney," she whispered, " If I die would you feel sad?"
" What?!" Petunia gasped, " Why are you saying things like that!"
" I had a dream about it. Would you miss me?
" Of course I would! You're my only sister!"
" If I ever get married and have child. If we die would you take care it?"
" I'll treat it as he were my own."
" Good. Come on, let's go home. Mummy's cookies should be done by now!" Lily smiled any trace of sadness from a few minutes ago gone. Petunia and Lily quickly grabbed each other hands before running of home together.
Petunia sighed as she remembered that memory. She kept her word didn't she? Sure, she didn't treat Harry like a son but she kept him, feed him, cloth him, and made him to to school. She didn't leave him outside to die or send him to an orphanage.
' Maybe just this one time,' she thought.
She quietly went downstairs into the kitchen making sure she was extra silent going down the stairs since that was where the cupboard was and where Harry slept. Petunia got some cookies, a slice of cake, and some milk. Leftovers from the Christmas party she and her husband, Vernon, had. Then she went to the cupboard and knocked hard enough so only the boy and she could hear.
" Aunt Petunia?" Harry said, opening the cupboard door.
" Here." She turned way as she gave Harry the sweets but saw his eyes brighten before it quickly died out.
" Why are-"
" It's not poisoned. After all the money we spent on you it would be a waste to kill you now."
" ...Er, thanks?"
" There's something else too," Petunia said, taking out a picture from her robe pocket.
" Is that...my mum?" Harry gasped.
" Yes, when she was about eight. You can have it if you promise never to tell anyone about this," Petunia threaten.
" Sure, Aunt Petunia. I promise."
" Good. Well,...Merry Christmas."