Time's Divide [Book] Goodreads
author: Rysa Walker Skyscape 2015 - 10
The Cyrists are swiftly moving into position to begin the Culling, and Kateโ€™s options are dwindling. With each jump to the past or the future, Kate may trigger a new timeline shift. Worse, the loyalties of those around herโ€”including the allegiances of Kiernan and the Fifth Column, the shadowy group working with Kateโ€”are increasingly unclear.

Kate will risk everything, including her life, to prevent the future her grandfather and the Cyrists have planned. But, when time runs out, it may take an even bigger sacrifice to protect the people she loves.

started reading Time's Divide ๐ŸŒ•๐ŸŒ•๐ŸŒ•๐ŸŒ•๐ŸŒ•
That was one unforgettable and epic adventure. You had to flip very fast but there are surprising twists and turns when you think it's almost the end.
Excellent use of time travel as indeed, spacetime is relative. In this case, relative is even more important and useful.
In the end, it's both sad and happy. We have to be positive but should not forget to be realist. Learn to take risks without sacrificing our family and love ones.
All of these and more were beautifully woven in this finale novel where fans are challenged to be in the shoes of Kate, Kier, and Kate.