Alexa's heart drops out of her chest, hits the floor, and starts to dig.

Only two people could have done this. One of them is still on Sahar.

She's not entirely sure whether she wouldn't like it to be the one still on Sahar instead.

"Evocatii," she says, quietly. "I think I've found your soldiers. But we have a new problem."

There is too much to do, and too little time in which to do it. 

"I have the dizzying task of finding a consummate shapeshifter, possibly rampant, amongst thousands of people on this ship. If she does not want to be found, I will not find her. Please, calm your people. And spread the word to them, because any one of them could be her. Tell them, 'Mynx, I just want to talk where we talked before.'"

It's dumb. Mynx doesn't want to be found, has no reason to come. But it's the only thing she can think of to draw her out.