[@Bushman501]

Since she uses extreme close range weapons, fire would tend to preclude any meaningful contribution outside of throwing detritus and debris at the monster. 

Though if she linked up with Szeren then she could take the paralyzing poison and use it on her crossbow. Even if it only makes a limb sluggish, it would still make targeting and debilitating it easier to overcome if it wasn't rampaging like a Deathclaw.