Lords of Uncreation (The Final Architecture Book 3)

Sufficiently advanced tech actively trying to look like magic.

Here she was in the heart of the Hegemony, the most technologically advanced polity humans had ever met, and apparently they’d developed past the need for efficiency.

She’d always assumed the thoughts in her head were mirrored in those of her sisters, but now she felt a chasm had opened up. All those women who wore a close cousin to her face might be strangers under the skin.