Depends on if she wanted him dead or not.
You are looking at this as if there as even a tiny bit of realism in Xena: Warrtior Princess.
It was part of the series' style that barehanded fighst are non-lethal and swordfights are lethal.
Despite that a normal, non-powered human is a lot less likely to survive a punch to the face that throws him ten meters backwards through a thick stone wall than he is to survive a stabbing in the belly.
It is very much like a hypothetical Punisher series in which Frank knocks people unconscious by a pointblank shotgun blast to the face.
Feats do not apply in these kinds of set-ups.