Okay, she still didn’t liked it to pay for ANYTHING she did here on Hogwarts, her mom had already paid for her, but, because she wanted to go to this party and she KNEW that she couldn’t get further without paying she… did it. BUT she still hated it and she REALLY didn’t looked happy at the moment! So, when she had walked up to the astronomy tower she paid what she needed to pay and walked further, hoping that the party was worth it and not a waste of her money!