She breathes in and out, not sure she has that kind of time. If Mark is in the fields, she won't be able to wait around for him to be back, because she needs to give him instructions on how to replenish her fluid and if she passes out, then he runs the risk of damaging other systems of hers without replacements.

"Come inside," she barks, when she gets to the door. "I need you to do something."

He's going to find out and if he decides that he's going to use her for anything, then Niska is simply going to have to do something about it.