Does this ruin me being a resist durge? (NO SPOLIERS)

(PLEASE NO LATE ACT 3 SPOILERS, JUST GOT INOT LOWER CITY, NOT DECIDED TO ASSASINATE OR NOT YET)

I just did the gortash ceremony, and I feel like Gortash is far too happy with me embracing my Bhaal latency. I feel lik ei've been doinga good job resisting, but then I ACCIDENTALLY let isabel got taken and killed her during the ketheric fight and now my butler is acting like i'm the best man in the world? I even got the slayer form. Can someone tell me if this ruins how people treat me as a resister? Also, can someone give me very limited knowledge on the assassinations? Such as if I can do them and sitll be considered a resister. Please and thank you,