You didn't do anything wrong. It's just the way your playthrough went through based on your choices and actions. My first experience in early access was similar to what you're describing.
The sleep potion probably didn't work because you were playing an elf or a half-elf, neither of which can succumb to magical sleep.
Ah ofc - that was it. I play as HE. I did wonder why one of the dialog options was prefixed with [HALF-ELF]. The way the dialog ended up playing out was a bit weird though - like something that should have happened didn't. I drank the thing and nothing happened and suddenly she aggro's me. Surely a priestess of her stature would know I was a HE and would know that sleeping potions wouldn't work on me...
