I've been meaning to bring this up for a long time. It is said that 0^0 altered her death letter in the godscript to make it so that she can only be killed by nothing. Wouldn't ??? technically be able to pull this off and kill 0^0? Also if you look at the wording for Unnotable one, it says something similar to a lesser degree. "If your parent is someone like that, then you can be said to have sprouted from nothing."
I feel like her use of the godscript might actually backfire and allow her to die by "nothing". It's just a creative interpretation of that, but what do you guys think?