If you wanted and desired to die immediately, but you had no means of articulating it or indicating those wishes beforehand, would someone grant you that wish? Would that be a licit and legal thing for someone else to take action upon your death-wish?

Karen clearly did not wish to die at all; nor did her parents or physicians wish to deny her a right to life.

Her parents and physicians all agreed (after the fact) that the removal of the machine proved to relieve her immediate suffering and distress, just by judging those outward signs and her struggles against the relentlessly opinionated machine.

There is nothing “compassionate” about killing; it is an oxymoron and a political slogan for eugenicists. You seem to desire that some assassin had stepped up and murdered Karen against everyone’s wishes, and against the law. You and your ilk have a similar mindset to Dr. Mengele, and y’all seem very very proud of that mindset.