>>282932773
She never outright stated that she wanted to be erased. She stayed silent when Fami talked about letting Chainsaw Man erase her.
To others, she did act like she wanted Death Devil to be defeated by War Devil.
However it seemed she was more intent on Asa weaponizing Denji than Yoru which is why she pulled Yoru out of the aquarium.
It appears she definitely doesn't want the weapon to land in Yoru's hands.