Michelle Farmiga. How to optimise her?

Just got the lovely gal few days ago. But sadly, having only APCR rounds means her damage and flexibility potential is quite limited to only med/short range map. (TBH I find APCR the weakest among all ammo. It has no burning, armour debuff, AP capacity of long rod or assault.) Now I am only thinking of using her as a second meatshield in all those snowy/forest maps.