There is no one that should be blamed for the sake of blaming. Blame causes hurt feelings, mistrust and resentment. But deal with the situation rather than assign blame.
Here’s my take on your situation.
Responsibility lies with all in this chicks case. Your parents should have know better than assume you understood or were even aware if the needs of a hatchling chick. As life coaches the parents should have first educated themselves in order to pass on information you. When that didnt happen and you were facing an unfamiliar task of chick mom, the responsibility to become self motivated and educate yourself for the sake of the chicks life falls to you. You can ask parents for help, search the internet and read. You did well seeking out BYC to post so it can be assumed you can navigate the sight. Take full advantage of the sight and educate yourself so that you learn and one day pass on that knowledge. Most articles in the learning center are easy to read and short enough to get right to the point. Know that there is not one person on BYC that instinctively knew how to care for chickens. We all, even the professional veterinarians on BYC, started out just like you…uncertain what to do, not too confident in abilities at first, and full of unasked questions. Not one was instantly granted expert status and honorary experience just for reading. Experience is doingas there are plenty of people with fancy book learning degrees that can’t change a lightbulb! But despite expertise of our most experienced BYC folks they can (and do) still make a mistake… that is the learning process. In order to learn you must read it, do it, evaluate it for mistakes re-do, teach it to someone else, then re-evaluate again and again. Remeber that life lesson... Reflect on what went wrong with this chick, list it out without blame, then THINK of how/what you can to differently for a better experience then try again being more informed. Take control of your knowledge and educate yourself, then you can teach someone else with a similar problem as
you become the expert (maybe teach your parents about flock animals needing a companion to become a flock wink, wink).
sorry for long lecture post but in life the buck will always stop with you and end with you in self pity UNLESS you actively do something to take charge of what you are able to in order to move toward self growth. keep curious and ask ask ask questions.. we live for this stuff. You got this!