parents help: Parents. - Help.com

She may have PTSD (post tramatic stress disorder) Post-Traumatic Stress Disorder, PTSD, is an anxiety disorder that can develop after exposure to a terrifying event or ordeal in which grave physical harm occurred or was threatened. Traumatic events that may trigger PTSD include violent personal assaults, natural or human-caused disasters, accidents, or military combat. If anything like that has happened to her, it may explain her behaviour. Or maybe she’s just having a hard time at work or somewhere else and she exerts her anger on you. Most oftenly anger that’s bottled up is spewed out on loved ones or complete strangers (i.e. road rage).

The solution i’d say would be to get her into therapy, should this be the problem. Otherwise, i’d suggust getting away from her some (hanging out at friend’s houses more often, stuff like that) to make her realize how lonely things are without an extra person in the house. Or if all else fails, i’d suggust going to maybe a friend’s house if you get sick (with their permission of course beforehand).