no more fighting

My aupair job just got much easier as of a few minutes ago.
Even before I arrived, Sabine told me that Ariane had a difficult personality, and that we needed to be firm with her and stand our ground. That's why I always went out of my way to contribute to her education as a human being - I felt that I owed it to her parents who are so good to me, and I would hate to see Ariane become an adult being the way she is.
However, I just realized that I really don't owe it to Sabine and Amaury to install order in their kids brain if they don't even do it themselves. I have never seen them win a power contest against Ariane--they would yell back and forth, send her to her room and ground her, but then give her what she wanted the a few hours a days later. They win the skirmishes, but she always wins the war.
so....I'm just going to just going to save my gunpowder and just stop caring. no more forcing her to do anything that's good for her; no more correcting her when she does or says something wrong; no more fun things with her either, because then I'd just start to like her again (despite everything, she's actually a pleasant kid when you're just playing).