Bosses maintaining attacks post stagger

On my HC character I died to Rudja in cruel difficulty. Reason being she started doing her melee explosive attack and I staggered her. I though I was safe because of that so I tried to dps more and play a bit more aggressive, what I did not know was that when she got out of her stagger she would continue from mid attack animation she was cancelled from. I feel like this is unintuitive and a bit jarring. I feel like bosses should not return to mid-animation state they were in before the stagger and they should start from neutral.