I know that sometimes it’s not “possible” to be in control of your own life because you’re still dependent on other people (like your parents, and that’s okay). But eventually, you become independent, and it’s in your hands to choose what will be best for you. You have that power!
Tink was not all bad: or, rather, she was all bad just now, but, on the other hand, sometimes she was all good. Fairies have to be one thing or the other, because being so small they unfortunately have room for one feeling only at a time.