In my playthrough, I romanced Shadowheart, convinced her to turn to Selune, and let her let her parents die. I got the beach scene, as well as the one at the statue of Selune (I think), and we also talked about starting a farm together.
I also chose to become a mind flayer myself after freeing Orpheus.
I totally get if that choice is what caused her to tell me that we had to part ways; it'd be tragic but fitting, and while it makes me sad and a little heartbroken, I respect the narrative giving weight to consequences.
But when she was saying that she told me something like "May Lady Shar keep you..."????
I think the game didn't register as having renounced Shar?
I was also weirded out walking through town after we let her parents die that she kept getting affected by the Mysterious Sharran Wound. At the time I shrugged it off but now that I think about it, maybe something messed up the save file and they thought we kept her parents alive?
Any help would be great with it. I feel like I haven't gotten the ending I actually earned and it's leaving a sour note on an otherwise fantastic experience
