Max's Demise

What if Maxwell Lightwood never died? What if he was kidnapped instead and his family fell for the trick?
Max had suffered for years, even after Sebastian's death. Jonathan/Sebastian's ghostly child (who has no name) refers to him as a brother- Max has no choice but to fall into the trap and become Sebastian. After years of torture, will he make it back? Or will the Fairy-Shadowhunter child engulf him in the demonic fire?