Dear niece, I cannot find enough wonderful words to describe how great my admiration for you is! Today, on your big day, I want you to know that I really, really like you. Happy birthday!
Keep going like this, chasing everything you want most and never forget that I am and will always be by your side. It’s just that you’re my niece, but you’re also one of the most incredible people I know in this world. Have a lot of fun on your day, dear!