Shimo is just because of She getting controlled,Tiamat is because Godzilla want more radiations/energy and Scylla is because Scylla has been naughty since Godzilla Dominion.
She would’ve been useful if she was spared, but Scylla was too hungry for Radiation and thought she can beat Godzilla. I mean, I know she evolved too, but it didn’t work well. Good thing the other Scylla that pleaded to Godzilla spare her life and got another chance to live.
@@goteamgodzilla9718 still though, if her Hunger builds up again, she needs something to keep it suppressed or feed her own radiation supplies so that she can always feel much better.