I've tried to force her companion dialogues via the console:
setrelationshiprank 14 3
addtofaction 5c84d 3
Unfortunately, this doesn't work. The dialogue option never comes up being overridden by some generic ramble you can ask her at the end of the mission. I tried getting her ID and spawning a clone... no results.
Doesn anybody knows a way in which I could turn a quest NPC or, at least, a clone of him into a companion?