Flatter, I like that!
When you (think you will) face Pandora (and Neverborn in general to be honest) you can never go wrong with Ruthless, WP buffs/debuffs/, Stubborn, and stuff like that. Against a Voices Pandora, Chiaki or Johan seems to be a nice addition (since Neverborn have heaps of conditions they aren't wasted hires anyway).
A very potent strategy against Pandora is to attack her with 7 stats, and cheat high from the get go. Its better to go all in with one big Focus hit, rather than trying to chip damage her. Blasts, and simple duels that targets DF are two other very good ways of attacking her. Since her crew likes to bunch up, blasts and AoE are usually fairly easy to hit her with.
Pandora's biggest weakness is her low amount of wounds, and that the only potent way for her to keep her wound count in check is ss prevention. If you can strike at her a couple of times, she will have to run away and hide.
If your opponent goes with the tanky Pandora, go at her with a model at the time. Otherwise she can tie up a chunk of you crew while never really getting hit, and they will take damage from FGF most likely. If you feed Pandora models, she might not be able to do more important things than killing your ranks. Summoners can do this with ease.
Crew wise, Bishop is a priority target, as well as the Widow Weaver. The latter can really wreck you crew if you aren't careful.
If you play Ressers, you are well suited to deal with Pandy. Seamus with Sinister Rep, Red Chapel Killer, and Decaying Aura will utterly scare Pandora to death. Belles Ca 8 can easily lure Pandora to places she doesn't want to be, and if Seamus gets within 4" (which he is fast enough to do) of her with that set-up Pandy can say her farewells. Hanged's Whisper From Beyond can also wreck Pandora's day.