Hi @mattie
If your daughter's current behavior is a personality change from how she normally would act, then she may be a victim of domestic abuse, or she is struggling with some other trigger and is acting out. "Abused people, abuse people". You mentioned that her hubby has a bad temper and was going to kill you because your head was in the way while driving. In today's economy, people are suffering financially and emotionally. How is the hubby's job? It sounds like your daughter's job is terrible, or her mindset at the job is terrible. It's time for family therapy. You need an excellent psychiatrist to speak with each person individually to diagnose what is actually happening in that home. Can you speak with your doctor about these mental illness problems within your family (abuse)? When is the next time you will be in front of a medical doctor?