hooded rider, maybe? use Night ability to get up close and personal (can't be targeted by ranged attacks), then swap over to a more damaging aspect when in melee range.
w/ pandora killing perdita quickly will be a major priority, otherwise she will mow pandora down w/ her weak defence (perdy can target pandora freely w/ no checks). the rider may be able to get to her, but it'll take 2 good hits (most likely w/ Noon aspect) to take her down.
(note, if you see lady justtits, she needs to go down quickly also due to the aura she casts.. can make short work of pandora also)
and to restate the orgetga's in general.. it's an even Wp dual w/ pandora and perdita. everyone else but loco will have an effective +1 advangage on the flip when defending a Wp dual. makes her normal trick of incite/pacify everyone hard to pull off