He named his daughter after a video game character, which she resented for a long time.
Source? Because from what I've read it seems like she's ok with her name. She has even done many things with Nintendo promoting their various games, including tournaments and commercials. She was even a special guest host of the London Zelda Symphony Concert on October 25, 2011. I don't think she resented her name at all.
Robin Williams also left a lot of money to his children, via life insurance and real estate assets. Maybe he thought he was doing them a favor?