Yeah, that's a tall order. He would prefer that she not just walk into a cafe and demand food in Doctor Disaster's name. But she's not the first person who's been Suddenly Hired By Doctor Disaster, and they can stop by a local bank and get a loan that won't carry interest if she pays it back within the first week, maybe? Or the Captain might loan the money to her personally if they ducked back in and asked about that; the Captain is one of those people who's good at his job because he's got the right sort of insanity for it.
It sounds like maybe the Supreme Sultana is from a world where a single Spark-analogue finally took over everything, and organized it centrally, and wasn't bad at it -- is that about right? Josephus Twoodle is sort of inferring this part from the way Opalyn talks about "the government" and there being somebody who could do such a thing as "stabilizing the economy". Here there's just, you know, more and less powerful Sparks, and their territories. The most powerful Spark he knows is Queen Albia, who rules an island-subcontinent of fifty thousand square miles to the north and west of Europa, and has done so reputedly for thousands of years, personally. Even she doesn't rule the world.