Phloria used one of Orion's spells, which revealed the relays of the keycard lock mechanism and allowed her to open it simply by sending a mana pulse to the right spot. She opened the door and ran to the ambush spot.
They had chosen a place at the end of a corridor, so that there was only one way in and one way out, requiring just a single Golem to trap them.
As Phloria had predicted, the construct Warped in to the end of the hallway to block the only escape route available. The Golem was surprised to see that there was no human in front of it and that its sensors weren't picking up any energy signatures.
Yet the door was open.
Phloria and Quylla were on the opposite end of the corridor, waiting for the Warping Array to open and to Blink through it. Once on the other side, Phloria was surprised to discover that not only had the surveillance devices already been destroyed, but also all the cells were empty except for the one holding the Assistants.