"I couldn't see the depths of him, and I decided it was best if I did not continue wasting my time trying to. So yes, there are humans like such with ridiculous amount of lifespan".
Elsa still has doubts about a human living longer than a spirit king. She would not have even considered the idea to be true if she was not hearing it directly from one of the spirit king itself.
"back on to Caius. I was talking about him before I diverted to talking about the Cardinal who is way older than I am. I don't want to get too carried away with someone who is not even present at the moment".
She wasn't satisfied with just hearing the path Ignatius wanted her to hear. Elsa is desperate to know more about the human Cardinal who is older than an Elemental Spirit king.
It wasn't at all fair to her after having her curiosity piqued on the so called Cardinal, only for Ignatius to stop talking about him for the sake of speaking of about the Cardinal she has less interest in.