If the 2 edit dwellers die, they can be revived with caps, but if not enough caps to do so... Well... Idk wat to tell you.. Maybe make a new room for dead dwellers holding like for your own choosing... should remove or keep to revive later once get enough caps? and dead bodies attracts monsters like deathclaw but something else challenging maybe gouls or whatever, rather than deathclaw to raid your fallout shelter? xD