I believe she is simply lying to herself. She claim that names don't matter to her, but she could can remember voidsents living in her domain by name.

Concepts like friendship seems strange to her because she must have forgotten things that aren't beneficial to her survival.

10 000 years in a dark world full of starving beasts, who's only relationship is using the others to survive.
Some ideas are just useless there. Friendship, hope or selflessness. All things that haven't existed in that world during these long years.