I plan to go with a Mythical Maid. Primary job will be throwing knifes at baddies until they stop moving, not tanky but also not exactly squishy, skillmonkey that can potentially fulfill different support roles. Can also do infiltration.
I would take Mook Maids to get a couple more skillmonkeys, one focused on trapfinding, the other focused on cooking for healing and minor buffs for the party.
Fluffwise they're a trio of maids that lost their previous home and mistress because dragon attack and are now looking for somebody else
that can give them a job worthy enough to serve, which would hopefully be another party member.