Wuchak
Power corrupts and DARK power corrupts absolutely
A single mother (Karen Black) and her misfit goth daughter (Rainbow Harvest) try to start over at a new location in a small town, but the girl is harassed at school and turns to a leftover mirror for succor. Havoc ensues.
"Mirror Mirror" (1990) is King-inspired horror with a high school milieu. The basic plot harkens back to "Christine" (1983) in which a persecuted unpopular person gains an advantage from some dubious source and proceeds to wreak vengeance on harassers. The Rage: Carrie 2 (1999) and "The Unhealer" (2021) are more recent examples.
While Christine and, especially, The Rage: Carrie 2 are superior, this ones not far off and has its points of interest, like Char...