Chuunitrixx's Racial Teleport let's her move anywhere she's ever been. Chuunitrixx's, fairly, been in every Chapter and Facility, and her Survivors are in Amberden, and functionality-wise, fragments of her overall being, and thus she, she's been to Amberden.

Concreep simply allows for targeting, hence why she was randomly flailing.

[@Lugubrious]