Overview
Grenade travel time combined with ICD makes these rather slow at having an impact in battle. Adding in the fact that most newer enemies are immune to stuns and Stun Grenade SMGs do not have any other means of increasing their survivability means they aren't really recommended for use. Her skill 2 is a Molotov with a bigger radius, but has less duration, comes out later, and does less damage.
As her mod doesn't make her more usable, still having all the issues of a generic Stun Grenadier, and now also being much weaker than a proper Molotov SMG. M38 is simply not useful.