I agree with costello that if there is any message in what you saw, it would be to take care of yourself so that you don't end up like that lady.

Also, I would think seeing something like that could cause post traumatic stress, which I think causes a lot of nightmares and flashbacks and dark thoughts. It would have a very big effect on you, really, and maybe more so because you do have some mental health concern already.

I know when I allow myself to get bored that's when my obsessive thoughts take over, or I get really restless and can't sit still. It can be hard to relax and find things to do to take your mind off of bad things sometimes. I understand that.