Allow me to pile onto the bandwagon, as I wouldn't mind Lienne having a few acquaintances/friends/partners in crime. Witch or non-witch, really. Actually, witch may be more interesting. Mimesis!
That said, I would also like to throw her Order hat in the ring, perhaps either having been requested or having decided on her own that she'd like to keep tabs on any number of the unaffiliated Hunters. You know, mentor or simply someone to try and nudge them back to the Order. Or away from at gathering speed.

Or just drink copiously with, as there is nothing at all strange about a woman her age drinking with college kids.

Not at all.

(what have i done)