How rich is Rozemyne?[P5V12]

Similar to the post last week on her strength, how rich is Rozemyne by the end of the series? She has amassed a ton of wealth but it's hard to gauge how much. I'm on P5V8, I know she ends up as royalty, I don't mind minor spoilers, and approximations are valid. You can include all of her assets such as Ferdinand's estate, assuming it's still hers.