What's the Name of That Book??? discussion

Hi, everybody, I am new to this group. I was trying to think of a book I had read as a teenager, and I cannot think of the name. I remember that it was a YA horror novel.... A new girl in town, possibly in Massachusetts... She lives in a "Saltbox" style house (that really sticks in my mind, for some reason)... comes across an antique mirror that begins to change her personality for the worse... It eventually ends up in the possession of a very rich, snobby peer of hers. Oh yeah, I read this in the early '90's, so it has to be at least that old.

Hmm, Time Windows by Kathryn Reiss is about a haunted dollhouse, not a mirror. Some of the plot points are so close, though! I figure it's worth a mention, even just to eliminate it as a possibility.

From Kirkus Reviews:

"When Miranda, 13, and her parents come to live in Massachusetts, Miranda finds an old dollhouse, a replica of their new home, in the attic. A more unsettling discovery: by peering through the dollhouse windows, she can observe the past, especially (according to a kitchen calendar) in 1904. Piecing together nonsequential scenes, she learns of an angry mother who's frustrated in her desire to work outside the home and whose abuse of her daughter Dorothy includes locking her in the attic. Another family, during WW II, repeats the pattern of a mother whose anger is linked to wanting a job; this woman attributes her behavior to the house itself, and the family moves. Then Miranda's mother too becomes irrationally abusive and laments her thwarted career--bizarre, since she's a successful M.D. Miranda eventually unravels a mystery that readers will have solved already: Dorothy didn't die in a train wreck but was trapped in the attic. More ingeniously, Miranda finds a way to change history: finding the attic key, she gives it to Dorothy through the dollhouse, with the result that several things change in the present--e.g., Dorothy is still alive. With numerous deftly sketched characters, including a sympathetic boy next door, an intriguing plot, and such dividends as a secret room used to hide escaping slaves, this should keep readers interested. Well wrought and entertaining. (Kirkus Reviews, September 15, 1991)"

Might want to check out the Someone in the Mirror list.

Sarah Armstrong, Blood Red Roses (Twilight), 1982. "Kate buys an antique mirror and hangs it on her bedroom wall, then starts having terrible nightmares. A classmate who wanted the mirror
steals it, which frees Kate to investigate the mirror's history -- she discovers it was owned by a girl named Rose in the 1840s. Rose brutally murdered her entire family, and her spirit is in the mirror, posessing anyone who owns it and driving them to murder. It's set in a small town in Massachusetts"

Blood Red Roses by Sarah Armstrong - bookel's suggestion

bookel wrote: "Sarah Armstrong, Blood Red Roses (Twilight), 1982. "Kate buys an antique mirror and hangs it on her bedroom wall, then starts having terrible nightmares. A classmate who wanted the mirror
steals it..."

I think this might be it! Thank you bookel!