If it wasn't clear enough, there were reasons for Cecilia's anger.
She understood why Oathran did what he did, no matter how fatalistic it was. She understood, on a biological level, the inevitable and instinctual pull Arkai felt towards her.
They were beasts, after all.
Just that Oathran, bonded to her, spent his energy defying his own draconic nature to do the "right" thing by arranging a successor, while Arkai, unbonded, was helplessly succumbing to his lupine nature by fixating on another's mate.
They were two sides of the same coin, each failing spectacularly in opposite directions.
Yes, although their intentions, buried under layers of male stupidity and grandiosity, were arguably pure, and yes, they wanted to protect, to provide, to ensure safety in a future they feared…
…there was one line they shouldn't have crossed.
"Scheme behind me again," she stated, calm as a frozen lake, "and I will rip your balls off you in your sleep."
