Would You Be Mad Too?

My sister wants to throw me a baby shower. I told her I want to have a diaper raffle so I can get stocked up on diapers. She said "I'm the one planning your shower thanks though 👍🏼" it irritates me because I'm asking for one thing and she said there won't be a diaper raffle. Thinking about telling her to forget it and I can have someone else throw it for me. Am I overreacting or would you be mad too?