Not a cat in hell's chance you'd be able to attach a tracker to that car within the boundaries of the law. She could easily sue for that.
What on earth do you think you're doing trying to get involved? Bad and frankly weird idea.
Good on you for speaking out. I had my first panic attack in September 2014. Was in the cinema, watching that shit film Lucy, and suddenly I thought I was having a heart attack. Took a long time for me to get to a bearable point, but the two things that work for me are SSRIs (sertraline) and...