The first 6 star SMG, and oh boy, she deserves it. As long as the damage isn't so overwhelming that it can kill her dummies outright, she has a chance to negate the damage. The chances increase if the enemy has more debuffs or has Marks of Vengeance on them, which immediately makes her a good pair with M4. Also the Sop doll is cute and comes with weird features. This is literally Sop's fault.

3-star PP-90. An evasion tank with too little evasion to tank and meh tiles, so a core. Her main plus is she has lots of uptime. ...Which doesnt improve her lot any because its still not great, just like PP90.

Ok, first things first: TURN OFF HER AUTOSKILL AND SET HER TO MANUAL IMMEDIATELY.

Also, NEVER SET HER ON A FRIEND ECHELON EVER.

UPDATE: This is fixed everywhere now so you can ignore that bit.

That out of the way, she's a pretty decent SMG with your choice of permanent passive buff. She renders most of the long-duration-but-average-buff Evade type SMGs completely pointless, having more HP than most, and basically infinite duration buffs you can choose.

Your choice of permanent 65% Evade buff (default), 85% Firepower Buff (2nd choice) or 200% Acc buff (3rd choice). Using her skill cycles between all 3 of them (if you cant tell, they're color coded. Evade is blue, FP is red, hit is orange. If you're colorblind... sucks to be you I guess.) Noone actually uses the Acc buff though. Also if you leave her autoskill on, it constantly cycles between these 3 and it gets annoying. In a friend echelon, you cant turn it off ever so it forever spams it and annoys people.

Oh, and she can load AP ammo, if you for some reason need an SMG that can do that. This does come up sometimes.

Honestly, she's not bad, but there's just...nicer SMGs now.

She's... not great. Basically a worse Suomi with slightly better base evade, a rather worse multiplier, and considerably worse HP. Her tiles aren't great either. Actually worse than MP5 once MP5's milk tin is taken into account. Buffs aren't anything to write home about either. Given you should be trying to get the UMP sisters early on anyway, you're better off with cheaper tanks until you get those.

A high class SMG that you get for free (and even better, starts at lvl90 with 5 links when you get her now) providing well balanced stats, and a very powerful tanking skill. -Enemy ATK power (nevermind her own +evade!) that goes off in the first 3 seconds, makes tanking the initial contact much easier, and is usable even from an off-tank position.

Can easily be a main or off-tank, while she combos well with UMP45 defensively, lol in current year you don't even need UMP45 anymore (isn't it sad?). Her main weakness is she has very bad uptime (5/12) compared to some other SMGs, but the quick startup and utility (and the fact most fights are short anyway) make up for it.

Did I mention you get her at lvl90 and 5x linked? That's REALLY helpful if you're starting out. And did I mention she has an insanely broken mod? DEFINITELY pick her up.

A weird hybrid tank that... doesn't have a great base evade, but has a fairly powerful self-evade buff with very high uptime.

Her mod adds to that and adds more to her kit. Quite interesting, see her mod entry here