I have a few ideas if you're working with magic, contrasted in my two main father and daughter lightning magic users.
Michi, the father. He's ancient and from a combative/warrior background. Also a Lightning mage. He knows a lot about using magic, ie, 'This is how I channel a bolt of lightning into my fingers and send it where I want. He has raw amounts of energy to throw about, and is highly capable.
Yaori, the daughter. She has some warrior training, but not much, courtesy of her father (they are in modern-day/future England, after all). She looks into the scientific theories of how electricity works and functions, then makes use of it to her advantage. So where her father knows 'This is how I do this with lightning' she knows 'Okay, lightning has to flow from an area of high voltage to an area of lower voltage. Normally it wouldn't because air's not conductive, but if I do (whatever) it makes it easier.
It also explains Slow Electricity
, by using it magically. Lightning won't naturally travel along any path, it can only move as fast as you will it unless it's travelling along its natural path. Michi often has Slow Electricity
, and Yaori's able to use lightning that works more like it should by providing it a path to flow, and inducing the voltage.