[At least Alina had first-hand experience with the effectiveness of a blood ward. Ianthe stopped her pacing so she could look down at Alina for a moment. Then she eased herself down to sit on the steps again.]

Yeah. I'll ward any points of entrance, but you need to know that even if I attune the ward to you, it will never prevent me from passing through it. I will also be alerted anytime it activates. This also means you're going to have to remember to by physically touching anyone you want to pass through it.

...it does require arterial blood to craft. A lot. Lesser necromancers have sacrificed themselves to create wards. I'll be fine, but it won't be-- Some might call it gruesome. You seem to favor 'gross'.