Alice had found you before Copper-9 had imploded, just as she found Beau, kind of raising you as her own. Like what she did with Beau

After the collapse, Alice started to change, to put it bluntly: she was insane. She was still your mother figure, but it didn't seem like she cared about anything other than appeasing her boredom as well as surviving.

She's sat at the camera system again, watching intently at the sentinels on the other side of the metallic door. She's been there for hours.