I think the guardian works well up until it turns out to be the Emperor. I just absolutely loathe this twist. I remember the dialogue option "Are you a mindflayer"? In the first encounter with the guardian, and I honestly thought to myself, "wow that would be a dumb twist" and proceeded to choose something else.

I really wish for this character to be its own character in some regard, there are so many possibilities for what you can do with her (wether we call her Daisy or Guardian doesn't really matter).