Quite useful, but not great on her own. Her own DPS isn't especially impressive for an MG, but she can give a decent amount of extra ammo to other MGs, which can be worth it or not depending on who you pair her with, in addition to giving shotguns extra armor.

If your name is deathalice, she is the best and most wonderful t-doll ever. Especially with her bike riding skin.

If you are similar to deathalice, she is the best and most wonderful t-doll ever. Especially with her bike riding skin.

If you are worried about performance, she is godawful and somehow took one of the better MG skills (Hunting Impulse) and produced a shittier version with an 8s startup (missing the point of having HI) that only works well at night.