[hider=Manium crystal paragraph]
A constant cause of strife between Magic & Tech users is a rare resource called Manium. Manium is the physical crystal form of Mana. Tech users manipulate the Mana in their body to react with A Manium Crystal bound in their weapon/tools, thus enabling the weapon/tool to perform powerful abilities. Magic Users will drain the Mana from Manium Crystals, temporarily raising their power or amount of mana. At first the increase is noticeable, though fades swiftly. More importantly this boost of mana is euphoric and addictive. 
[/hider]
The two slots are storage spots for tiny crystals. So if she does need a boost, she doesn't have to rummage in a pouch for it. She can just grab it from that slot quickly and readily. She does not interact with them to make her magic work on the arrows. Thus, not tech. If the GM says that no crystals permitted on weapons for non tech users, I will be happy to oblige.

I also realize that my description of her magic abilities is not the conventional "Spell flinging". I wanted something more unique, and some ways from the norm. Makes things more interesting.