What did Carter mean was that all it took?

No, it took much, much more than just getting a galleon to lick the spoon. She had to actually hold the spoon in her hand, she had to then raise her hand, while holding the spoon, up to her mouth. She had to stick her tongue out and then lick. That was alot of work! So it was only right that she would get paid for doing it. At least, in her mind it was right. Merlin knew what was going on in Carter's mind.

But she wouldn't tell him all that. It would only give him ideas on how to make money, and then she'd be put out of business! Besides, by the sound of his question, it seemed like she was going to make another galleon. And sweet Merlin, Hogsmeade weekend was approaching. She be loaded with chocolate forever! "That all depends. Do you have a galleon on you? Right now." Because she wasn't going to wait for it.

Although, they were headed up to the seventh floor. He could go into his Common Room. But she wasn't sure if he would come back out.

Reaching the landing of the fourth floor, bloody steps, Destiny stopped to glance around. It didn't seem there were any good hiding spots on this floor either. If she ever became Headmaster, she'd make sure there were hiding spots. Hearing Carter behind her, though, she started walking once more.. until she reached.. some sort of tapestry. She didn't think anything could be uglier than the statue they just left, but she was wrong. "Yeah, that's what I'm saying. But I could still ruin your day."

Turning around to face him, she gave him a smirk, just because she wanted to, and moving closer to the tapestry, she lifted it from the wall and hid behind it. "Like this." she called out from behind it. "I normally spend my days like this." Which was not too far from the truth.