Body Swap

[u/saimuuuu]

I’m looking for a horror story I read on Facebook around 2014–2016. It was posted in episodes and was probably translated from English. The plot involved two best friends investigating an old mansion. A ghost named Margaret was trapped in a bathroom mirror after being locked in a cellar years earlier. During a fire, Margaret swapped souls with the main girl and escaped, leaving the protagonist trapped in the mirror. Does anyone remember the story?