The Light Between Worlds by Laura E. Weymouth

Five years ago, Evelyn and Philippa Hapwell cowered from air strikes in a London bomb shelter. But that night took a turn when the sisters were transported to another realm called the Woodlands. In a forest kingdom populated by creatures out of myth and legend, they found temporary refuge.

When they finally returned to London, nothing had changed at all—nothing, except themselves.

Now, Ev spends her days sneaking into the woods outside her boarding school, wishing for the Woodlands. Overcome with longing, she is desperate to return no matter what it takes.

Philippa, on the other hand, is determined to find a place in this world. She shields herself behind a flawless exterior and countless friends, and moves to America to escape the memory of what was.

But when Evelyn goes missing, Philippa must confront the depth of her sister’s despair and the painful truths they’ve been running from. As the weeks unfold, Philippa wonders if Ev truly did find a way home, or if the weight of their worlds pulled her under.