Taako probably means that nothing has been taken from their memories while in this place, but Lup's heart drops a little anyway. It just sucks. All of this sucks.

But instead of digging for more, she just shrugs, gaze turning back forward. "That's good, then. Most of the people I've talked to knew they lost something, so you'd probs know if you had. Either way, this placed is just fucked up."