Hinata is a bit of a selfish person and tends to be stingy.
She is addicted to everything that involves money, and spends a lot of her money on horse gambling tickets, stocks and the sorts. She wishes to go to college, but so far has managed to fail the entrance exam three times.
Hinata is also very cheap. She will try to find any way to cut corners and save money, such as going so far as to bring her laundry to a bathhouse to both bath herself and wash her clothes, thus saving money from going to a laundromat.
However, the only times she seems to splurge is when it comes to her family. She has a lot of siblings and buys things for them without even thinking twice about the cost.