I will say though that getting anxious when getting asked to look for the keys does sound like a symptom of ptsd. Being blamed for bad things happening even if you werent even remotely responsible is nothing new to me, it really eats into your mind that you are somehow you are the cause of the loss of demise of any object or situation. My mothers ex used to always tell me my negative thoughts were creating negative energies which in turn made bad things happen to us, whether it was someone stealing from us, using us, or the car breaking down. I was a manipulator, selfish and a drama queen who played mind games with others to control them and get my way. All at the tender age of 13. That was 10 years ago and you bet it still sits in my mind and reappears every time something breaks down, like my laptop, or something bad happens to me or a relative.