Dark Passage:
The Lackland Abbey Chronicles: The Second Adventure
by Mary Jo
While I've always written romance focused on one couple, but with connecting characters around them, this young adult series is different because it's about a small group of young people moving together through their world.
The heart and soul of the stories, is Tory–sixteen year old Lady Victoria Mansfield. In Book 1, Dark Mirror, she was exiled to Lackland Abbey to be "cured" of her magic. There she makes friends both at the Abbey and in WWII England, where all the young mages worked together to help save their country.
After surviving the terrors of time travel and of the Dunkirk evacuation, Tory and her friends are grateful to be back home in their own time, and none of them want to ever again make the shattering trip through Merlin's Mirror to the twentieth century again.