I found Nara to be quite easy to use once I equipped her with the Kodama. She easily outpaces the other characters in level, and her quick strike (Not sure if I am remembering that name right) is plenty strong enough after Tulu has used her "normal punch" thingy. All those 200 damage strikes add up.
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Oh wow, someone actually used Tulu's Light Punch for the original purpose of buffing Nara's Rapid Strikes XD . I actually even forgot about it because I changed Rapid Strikes after to have more uses.
Did you figure out Nol's most important combo with Nara? Because that can further boost the damage. (Hint: her relationship with Nol, which is mentioned fairly early on).