thoughts on this situation?

16 year old girl who never goes out is going on vacation with aunt. dad gives girl 50$ to spend on vacation. once on vacation aunt and girl go shopping. girl has already spent 35$ while there, and they arrive at a store and girl sees a pair of 8.99 sunglasses she loves but also wants to buy her dad a hat which also cost 8.99, but she doesn't have enough money for both. aunt tells her to put back the shades but she says she wants to buy the shades and get her dad something from the "everything 1.99" store. aunt gets very mad, but they go to the discount store. she then sees a shirt she thinks her dad will love for 2$ and the aunt goes off yelling saying how ugly and gross the shirt is, and how the dad won't like it. aunt storms out of store and girl begins to cry at the cash register. the next morning girl asks nicely for aunt to aplogize but she refuses and calls the girl selfish, who's in the wrong?