A couple bucks? I haven't bought ice cream from an ice cream truck in quite a while but isn't the minimum cost about $3? Maybe she already has a dollar or something.
"Money doesn't buy happiness"? That argument doesn't work on kids Hattie's age. And it doesn't work on adults either. Money can go a long way into helping make people happy. Wouldn't we all be happier if we all had the money to not worry about money?