Normally the previous wouldn't be something to really worry about, because despite being the case, the truth is that Nerissa's fighting style was properly adapted to the mortal level.
It is said that she "wastes" too much energy into mobility and fluidity she doesn't need unless dealing with specific targets, but that's a relative observation, if we talk about from the point of view of her cultivation manual, then she is perfect.
In fact, even if we were to add her attack and movement type manuals to the equation, such a meaningful world as "abusing" of her fluidity couldn't be used to describe her current state, at most she will be "inexperienced" but the process of integrating the knowledge of said manuals would be considered set in stone already.
