I'm not sure specifically which 'The Girl in Room 105' true story you're referring to. There could be many stories with this title. It might be about a girl who had a unique experience while staying in room 105 of a hotel or a building. Maybe she witnessed something strange, or something important happened to her in that room.
Well, without more context, it's difficult to tell the exact true story of 'The Girl in Room 105'. However, it could potentially be a story of mystery. For example, she could have been trapped in the room 105 under some strange circumstances, like the door got jammed and she discovered a hidden passage or a secret in the room while trying to find a way out. Another possibility is that she met a person in room 105 who changed her life in some way, either for good or bad.