Like the others I couldn't find her initially, but she's directly under the teleporter icon.
Haven't yet found a swornbreaker to give her yet though, so haven't tested that part.
Yeah, I've tried now to erase all my ship chest items (which I got many). Used oil barrel production machine at Blackpit. And it works. She appeared. I've reload save thinking bug was fixed at recent patches, but not - still she not appear.
So now I'm erasing different parts of my ship chest trying to investigate what exactly leading her to disappear.