When (H)Onore takes Phaid to Celena he always introduce himself as "Nora's brother". Even if in the selected route he does not know that he has a twin sister in Totem City's timeline.
Looks like check in script.rpy line 7017 doesn't work. Probably it should be if gd.has("nora") instead of just if nora? If this is the case then similar check in script.rpy line 7045 should be fixed as well.