I haven't tried this path, but I'd imagine being a Cleric and using Cleric-specific dialogue options assumes more than a little bit of religious zeal on your part. If anything, Shadowheart is a very unusual Cleric, in her behaviour and commentary - on the surface she talks about her devotion to Shar but in her actions we can see a glimmer of something else underneath. That's what makes her interesting. Followers of Shar aren't expected to have doubts, like Shadowheart does.
(I did make a cleric of Selune to see what arguments Shadowheart and I could get into, but I was turned off by the overly religious references early on as well, so I didn't get far in the game with that character. I think I'll stick with my Druid, at least devotion to Nature is closer to home for me!)
Last edited by Alexandrite; 23/05/21 11:14 PM.