But there is still the question of if her intentions are sincere towards the MC
Wouldn't really matter if she was a gold digger, it wouldn't have any impact on their relationship.
She ends up with the MC, assuming she fills her conditions, she also ends up with her millions and he ends up with his so they would be rich as fuck anyway.
The big difference is she would be a gold digger with a man who would treat her right and show her the love his dad never could.
Ulterior motives don't really matter when you have everything.