I estimate there are about 13 chapters left in this book. So perhaps two to three more arcs. Not to worry, I am already working on plans for a second book :)
This arc however is pivotal in challenging Emily and Daniel's views of conflict resolution. Daniel was petrified of conflict which meant that Emily inherited this fear too. Suffice to say while Emily's family is generally supportive, there are times even the patient Sarah and get pushed over the edge. This ends up being a new opportunity to learn about an old fear, and conquer it.
Unlawfully taken from Royal Road, this story should be reported if seen on Amazon.
The second part of this arc is to expand Emily's family. She finally meets her (maternal) grandparents! Modeled somewhat after my own, Emily instantly feels like she has known these people forever. While they have a short role to play in this novel, they nevertheless help Emily feel more grounded in this reality and complete the 'family' arc. This sets up the book for the endgame arcs...understanding what exactly happened to Emily and Daniel.