she seems to have decent ACC, can hit apex raptors and matamata reliably without needing marine stewpot food but starts missing vs apex bats, apex jagils and apex crabs. however i suspect her to wield some sort of kraken club cause her attack/damage on auto attacks is extremely low, she hits apex matamatas and apex crabs consistently for 0 damage and even with 20% -def debuff she rarely does 1 damage.
on the plus side her tp gain is very fast as expected with kraken club, sometimes ready to WS within ~2 attack rounds.
she seems to pick WS at random (or maybe tied to something weird like odd or even day time numbers) on summon. i once had her pick nott 3 times in a row so you can't reliably plan ahead to have her on the right WS when you do instanced/time limited content.
her hexa strike has fusion property as expected
peacbreaker seems to have Distortion/Reverberation property and maybe a -def down debuff (not convinced yet).
*edit1*
najas abilities:
-Focus
najas weaponskills:
-Hexa strike (Fusion)
-Nott (self heal)
-Black Halo (Fragmentation)
-Peacebreaker (Distortion/Reverberation)
-justicebreaker (Darkness/Gravitation) [seems to apply -mdef down, diffusion ray did 5600 befor and 7000 dmg after she applied justicebreaker, i'm not convinced of the 50% as mentioned in the wiki.)
if someone else wants to pick up a uncommon trust and do testing feel free to add the info here so someone with edit rights can update the wiki.