Do you think it's ok if tell a pretty girl to figure her life out before moving to new york city to fail as a dancer?
Why would you say something that cruel?
She decided to move to new york city despite her parents' objections.
It is rude to be so dismissive of her dreams. Even if it is an unlikely dream, you don't have to be so harsh and can express your concerns in a more considerate way.
How come? A girl should have a back up plan
Sometimes you have to let people fail and see how it works out for themselves so they can grow. You should try to encourage them to pursue their dream and have a backup plan simultaneously.