She is OK. Her stuns can be problematic but she is mostly unnecessary in the team comp. Oddly Talia is often a better NS because NS lack the ability to cleanse themselves and Talia can really improve their survivability particularly in events. Talia comes with group cleanse, TM gain, heals and max health reduction.
Even Acolyte can be better. Her stealth can really throw some teams into fits if they don't have AoE/expose and she can hit as hard as Spirit as she can quickly ramp up her CD to an extra 180% on her special and do nearly double damage on her basic when stealthed.
