If you knock out Aramis Stilton and "fix" the timeline, Lucia Pastor can be found in the United Miners office instead of a soup line. She berates you for keeping the Duke in power, then warns that not everyone in the Grand Palace is your enemy. The only person I can think this applies to is
Armando, the Duke's body double who is open to taking the Duke's place.
Is there any implication that this person is working for the "resistance", and if not, who else in the Grand Palace could Lucia referring to?