Split Infinity — Thalia Kalkipsakis

A split-second decision, a single time-skip. The world you know, gone in a blink. After the gripping cliffhanger escape in Lifespan of Star Light, Scout lands with a thud in the future. But it's not 10 years later, where she's supposed to meet her time-traveling friends. It's only four. In this "now," Scout finds only desperation and grief. Haunted by the consequences of her last jump, she panics—and when she jumps again, everything changes. Sucked backwards, Scout achieves the holy grail of time-jumping: traveling back through time. Now she's caught between finding the mother she left behind and time-skipping ahead to her only friend, Mason—but can her actions in this "new" past change the future?