This limitation comes from the fact that for each clone, she would have to split her own consciousness and thinking.
Overall, if she wanted her plan to succeed and actually make a difference on the battlefield, she had to overcome that limitation.
And, she did!
Those Cyber Cores she created contain a separate AI function that, although can connect back to the main mind, has its own thinking.
In other words, each single one of those hundreds of armoured dark purple haired girls floating in the sky right now is a separate entity!
Needless to say, this wasn't something that Kayla had just created out of thin air. She has worked and planned a lot in order to come up with a way to create those Cyber Cores.
But it was worth it and the advantages heavily outweigh the effort put in.
Hm, I'm working on going back to 2 chapters per day, we'll see how that goes...