Laezel specifically advises you to leave Shadowheart to die and Shadowheart in fact comments on this. The whole reason for the 'new' attitude Shadowheart shows you is that you chose to ignore Laezel and rescued her from what she believes was certain death.
Exactly. SH even warns about teaming up with Lae'zel. It is never once suggested that they want to team up with each other.. simply that they both want to get out alive. Just because they are fighting together to get off the ship does not make them friends, suddenly. SH thinks Lae'zel is less dangerous than being on a Nautiloid in Avernus, but that does not mean she thinks Lae'zel is acceptable to group with. On the ship, it is just desperation. Once off the ship, SH quite rightly does not want to group with Lae'zel.
This is CONSTISTENT, not inconsistent.
