Have you talked to everyone in the BDSM club? She won't appear there until you do!
yeah I've spoken to the receptionist. Police lady, forgot her name and just gone around to all the side npcs in there and I still can't find her in upper new ark. I'll have another go and talk to them all again though.
Also should mention I can't get Cassie to move from the milk farm, not sure if that's a bug, unfinished Cassie side quest or something I need to complete still