The woman in black veil thought that the power or the curse of Eternal Life that was placed on the Ancient God of Origin and the Ancient God of End are something that was made from an unknown energy that she can use and plan to steal it from them. She was delighted as after being born in this cosmos most of her original powers had been stripped because she is another cosmos ruler from the beyond which is why the Diamond Cosmos itself rejects her existence.
Due to this, her realm couldn't reach the Cosmos Ruler realm. She realized that this cosmos is restraining her from breaking through to such a level as to prevent her from taking over the authority of this cosmos. Which also meant that this cosmos's original rule is still alive. It's the same situation when he tried to take over the Obsidian Cosmos whose ruler is said to be missing but not dead.
