I fully understand and I am very sorry your need to come to this forum. I think we all have hit a point of grief that preceding the event of a death because this is a freight train we can see but have little options to prevent the ultimate collision. As the condition worsens (and it will), we suffer from various issues, such as self doubt or "did I do enough?", "could I have done better?" and the anger comes out that we were somehow sub-standard to the PALS needs. I STRONGLY recommend some type of Anger Management, and focus on loving care. Do the best you can but understand it may not be enough. Find a way to vent your anger, such as beating up some type of dummy such as may be found in a martial arts place or going out and finding a spot where you can scream, yell, and vent without bringing the police, fire and EMS!