The Oakbrook Portal

Sam was gone, and no-one knew where, or why. Her car was found near the old oak tree, empty and abandoned. There was no sign of foul play, but also no sign of Sam, apart from the footprints that led to the tree, and then stopped.
Two years later, Kate still cares for Sam's daughter, hoping Sam will return.
Then one day, shockingly, she does. "I don't have long," Sam begs, "Can you help me?"
Kate must help Sam escape from a place closer than you might think, but still worlds away.
In a whirlwind of magic and monsters, where people are not who or what they seem, there are hard choices ahead, and Sam will discover if she is strong enough to make them.