Poppy with some favourites!

Because I was once a children's librarian, I can't help recommending books! Here are books that are similar in genre to mine. Some may be out of print, but you could probably get them at your local library.

If you liked THE DARING GAME, try these boarding school stories:
         CHARLOTTE SOMETIMES by Penelope Farmer
THIS CAN'T BE HAPPENING AT MACDONALD HALL! by Gordon Korman
A SWARM IN MAY by William Mayne
THE SECRET LANGUAGE by Ursula Nordstrom
 
If you liked A HANDFUL OF TIME, try these time travel novels:
  WHO IS FRANCES RAIN? by Margaret Buffie
TOM'S MIDNIGHT GARDEN by Philippa Pearce
THE DOLL by Cora Taylor
BUILDING BLOCKS by Cynthia Voigt
 
If you liked THE GUESTS OF WAR trilogy, try these novels set during World War II:
  CARRIE'S WAR by Nina Bawden
WHEN HITLER STOLE PINK RABBIT by Judith Kerr
GOODNIGHT, MR TOM by Michelle Magorian
THE MACHINE GUNNERS by Robert Westall
 
If you liked AWAKE AND DREAMING, try these ghost fantasies:
  THE CHILDREN OF GREEN KNOWE by Lucy Boston
THE GHOST OF THOMAS KEMPE by Penelope Lively
DOUBLE SPELL (sometimes called TWIN SPELL) by Janet Lunn
THE TIME OF THE GHOST by Diana Wynne Jones
 
If you liked WHISPERS OF WAR, try these historical diaries:
  A GATHERING OF DAYS: A NEW ENGLAND GIRL'S JOURNAL, 1830-1832 by Joan Blos (fiction)
CATHERINE, CALLED BIRDY Karen Cushman (fiction)
ANNE FRANK: THE DIARY OF A YOUNG GIRL (non-fiction)
Any of the "Dear Canada" series published by Scholastic Books Canada (fiction)
 
If you liked A PERFECT GENTLE KNIGHT, try these stories about knights and imagination:
  The "Arthur" trilogy by Kevin Crossley-Holland
KNIGHT'S CASTLE by Edward Eager
THE EGYPT GAME by Zilpha Keatley Snyder
SWALLOWS AND AMAZONS by Arthur Ransome
 
If you liked THE WHOLE TRUTH, try these stories about girls in the past:
  THE MIDDLE MOFFAT by Eleanor Estes
UNDERSTOOD BETSY by Dorothy Canfield Fisher
ANNE OF GREEN GABLES and EMILY OF NEW MOON by L.M. Montgomery
REBECCA OF SUNNYBROOK FARM by Kate Douglas Wiggin
 
If you liked AND NOTHING BUT THE TRUTH, try these books whose characters reflect either
    Polly or Maud:
  GROWING PAINS by Emily Carr
JOHNNY KELLOCK DIED TODAY by Hadley Dyer
THE LIT PROJECT by Sarah Harvey
FOREVER ROSE by Hilary McKay
 
If you liked A DAY OF SIGNS AND WONDERS, try these stories about Emily Carr, Point Ellice
    House, and old time Victoria:
  THE BOOK OF SMALL (which includes the story “Mrs. Crane”) by Emily Carr
DISCOVERING EMILY and EMILY’S DREAM by Jacqueline Pearce
THE OLDEN DAYS LOCKET by Penny Chamberlain
ACROSS THE JAMES BAY BRIDGE, DISASTER AT THE BRIDGE, BUILDING BRIDGES and SUMMER OF GOLD by Julie Lawson