I emotionally can't read this book.

So throughout my child hood I have had to live with hearing my parents fight all the time. It was violent when I was younger. and now because of that I cry every time they get into an argument. I've also had three people die in my life suddenly. So if I watch a movie or read a book that has a death in it I cry.

Well I have to read this book for school during the summer and I emotionally can't read it. It has kids being treated harshly and that reminds me of all my childhood trauma so I start crying. And they had a dad getting drunk a lot and that reminds me of when my mom was an alcoholic. She drinks when she is depressed. So I started crying every time it mention the dad getting drunk. I can't read this book without crying a lot. What am I supposed to do? I have no idea why I cry because of trauma when no one else has this problem. It's not a normal thing.