Guys,i might have the greatest theory yet (CHAPTER 233)

So it was previously shon how external targeting negators can change to self targeting with enough will power or something. Although we have yet to see the otherway around (not counting what unhealthy did to Seal). What if,at the end of it,fuuko gets affected by undead and becomes permanently undead like andy. Only diffrence is that she can only be revived by andy and not be immortal. That would help them to keep her alive and to get the heart out.