She Chose Fire
Even if she didn't die right away, she was as good as half dead.
Though Bryan and Miriam were heartbroken by what she had done, Layla was still the last heir of the Sunfire Pack. The two of them burned through their own life essence to keep her alive, but in the end, they couldn't save her. She passed away yesterday.
So you see, true love really does show.
Back then, one misunderstanding had been enough for them to strip Seraphina of all warmth and affection.
But when Layla nearly destroyed the world and brought disaster upon herself, they didn't punish her. Instead, they exhausted themselves trying to save her.