If she's a paladin she should be able to heal him no problem Lay on Hands is a ridiculous Heal that can bring back the dead that is if they just died though.
@Anjunadeeps she dosnt bring back the dead but it did heal bad wounds to a stable state his problems was broken bones loss of blood and exaution all 3 take energy and time to recover from even with her type of healing helping usaly
@johndoe Lay on Hands is a classic Paladin spell for a tabletop rpg game. Using lay on hands, you can bring the dead back to life. Prerequisites: Charisma 19, Greater Mercy, lay on hands, mercy class feature. Benefit: You can expend 10 uses of lay on hands to bring a single dead creature you touch back to life as a raise dead spell with a caster level equal to your paladin level.