I mean like how do you expect anyone to diffuse the tension?
Guy pissed, thinks he gonna die regardless, isn't expecting to be heal and has nothing to lose
Other guys gonna retaliate and fight him back
Healer made a convincingly decent argument, and healed the bastard so he could maybe care...
imo she was trying to get to know him better so she could re-do their relationship (this is not knowing he also timeslipped) but that my theory, but now knowing he also timeslipped its not possible i guess lack for a better term groom him?