1. It is entirely possible to rescue Lae'zel without killing the tieflings. Not sure why you view her as a monster or how she had already left you twice.
2. The artefact moves to your inventory because <Larian logic>. There is a dialogue with Shadowheart at some point after it has changed hands.
3. Agree completely about the blood and dirt thing. I use a mod to do away with it.
