Not sure what she is making but I wanna help her be super tanks in crucible

try out duo build spark inq + support, there is guide on youtube for both

Will check it ty

I have tried this with my buddy and it works great even with other builds like arc or lightning arrow, you can find any build you like and just ask op to adjust it for running with support so you dont double use auras, or try it yourself

Dont use flat lightning damage with spark. Best uses right now are poison [cheapest] Or cold conversion [best for supporting because of freezing enemies but a little more expensive.]

If you want to go full support, I would go full cold conversion with low damage but very high cold conversion and high freeze/chill effects.