Who Is Telling The Story? What Do You Know About The Main Character?

'Mom, please talk to me. -Claire.'
'I just can't Claire. I'm sorry but I just cant. Be paitent. -Mom.' 
This quote was taken from my book, Life On The Refridgerator Door by Alice Kuipers, Page 118 and 119. Within this quote, you learn that the narrator is both the Mom and Claire, since the whole book is just notes between just them. You can also see that there is some sort of conflict between Claire and her mom, though it doesn't say in this specific quotation what it is. It is also obvious that the conflict is a big deal, since they are not talking at all about it. I've just finished the book, so I can't really make a prediction oh what happens, though it is pretty obvious when reading it since her mother has a serious form of breast cancer. For the video I picked a song that reminded me of the book.