does my book have justice?

The book i am reading is what happened to goodbye by Sarah Dessen. in this book the main characters parents are separated and the daughter feels put in the middle because she lives with her dad and her mom keeps trying to talk to her, even thou the main character because of the fact that she feels her mom broke her dads heart which she kind of did. I think justice will be served if the main character is taken out of the middle of the separation. Which is kind of complicated because her and her mother would have to work together to make that possible
The main character can change it by just excepting her moms mistake and move on and let it go. then by talking to both of her parents and showing them equals respect she would be forced in the middle of the separation. Also the mother can except that she made a mistake and give the daughter time to get over it. i think that if they come to an agreement with these two solutions that "justice" would happen for everyone