Help needed

I’m looking for a book. I believe it is shojo. It’s a reincarnation where a siren girl who was mistreated by family and used by a figure of power to sing for a bunch of people until she died and now shes a little girl who is trying to get more used to her abilities in a dukedom. I remember the art is really shiny and the fl has pink and pink eyes and is often labeled as a bunny. Thank you.