While growing up, your sister has always had your back and supported you throughout life. However, at some point in her life she got addicted to drugs and was unemployed. She eventually realizes the destructive nature of her new lifestyle and wants to get her life in order. Being the good brothe, you let her live with you and your wife but tell her she needs to stop doing drugs and get a job. If she fails to do that she is out by the end of the week.
Things are good for first couple of years with your sister being present for many of the events of your 2 older children. However, one day your sister gets into an altercation with your 9 month pregnant wife and stabs her multiple times. Your son and daughter, 9 and 7 yrs old respectively, witness the murder and your son races to the neighbour.
However by the time police arrive on the scene, your unborn child is dead and so is your wife. Could you ever forgive your sister for taking your wife and child away from you?