Not in any sane society could the loss of Gabby be equalled with the 'loss' of Brian. She was brutally murdered, she was a fighter, she would have fought him off, god alone knows for how long, he would have been, had to have been , relentless in pursuing her death, at his hands, he used his own hands to kill her, he wanted it personal and he wanted her to know it.
The magnitude of loss suffered by the family and extended family of Gabby stacked up against the loss suffered by the Laundrie's is immeasurable. Immeasurable.
On the other hand, Brian's death, at his own hand, at a time of his own choosing, by his own chosen method, at his own chosen location, having notified his parents where he could be found, ( his own parents found his body, LE didn't , that cannot be a coincidence ) , thus saving them the excrutiating agony he and they loaded the Petito's with, done to avoid the consequences of his own vile and savage actions, is hardly to be considered a loss, in comparison.