"Complaint logged and noted," Peridot says dryly, because she doubts very much that Jasper was actually trying to be helpful in any way.

None of this is really working out as she had predicted. She had expected the demons to be miffed about getting shorted a soul, of course, but she had also assumed that letting them have freedom of movement would be enough to make up for that. It's certainly a lot more than most humans give their summons; at the Institute, people conjure up spirits for scientific investigation all the time and keep them on an incredibly short leash; usually the demons involved are happy enough to take a deal, just to have the chance to get out of hell for a while. Better to be out in the world with the actual possibility for causing mischief than it is to be starving back in hell.

Clearly, these two just have higher standards than anticipated. That is the only possible reason Peridot can determine for why her carefully laid out plan is failing so miserably.

The scientist heaves a sigh and pushes a hand through her hair. "How much... blood... do you need. And how often."