While they argue about this point that doesn't matter because they're not actually using literal Leudorfell, she's going to think.
So far she's been reacting on habit - which is fine, her habits are working - and periodically reorienting (yep, still in a court in the Boneyard, no threats, no other opportunities). Time to strategize.
Goals: stay alive, do her duties, seek fulfillment. Her relevant duties are to argue for Lawful Evil, argue for Law, set useful precedent, deal fairly, and represent Marra to potential recruits. Personally, she wants to use this opportunity to practice mental skills and become more useful to Marra, advance Marra's interests, and, to the degree permitted by her duties, get a judgement that pleases her.
(Yes, advancing Marra's interests is a personal goal, not a duty. Marra demands specific duties from her feudal vassals, not 'take My goals as your own'. In fact, using your superiors for your own purposes is a Marran virtue.)
Actually one of her reactions was incorrect. Elysium made an argument about what counts as slavery. She was worried that narrowing the definition would hurt Marra, but Marra's 'slavery' subdomain is bundle of god-magic that has nothing to do with the word.
(And of course Her related areas of concern, Paternalism and Feudalism, are god-concepts that do not depend on the definitions used by anyone else, but that's not what Kireh was thinking about.)
Queue revisiting that question. Queue, at lower priority, figuring out why she made that mistake.
What is the shape of this case? No more grand speculation. Shorter term speculation is clearly Lawful Evil. In fact, wanting to own people and shape them to be powerful and useful and satisfied with their place is very fitting for Marra. The 'myriad daily actions' lean toward Law and Evil, in her opinion from skimming the notes - she'll have to improvise on that. (Would the decedent help, as the agathion advised him, if his preference for Elysium were ruled out? Queue that.) A literal application of Leudorfell either gives no alternative, and the project as a whole is Evil, or an alternative, and the results of how he carried it out are Evil.
(Speaking of which: orient. Are they still arguing about literal Leudorfell? Okay, keep thinking.)
...No more grand speculation on the effect of the project on society. But: What alignments would mice have? What alignment did Malosloff want them to have? (Neutral Good) What gods would they follow? At what point would they have souls?
The answers to those questions lean Chaotic and Good, unfortunately. (If only he had picked rats instead of mice.)
Pop from the queue. How would narrowing the definition of slavery affect precedent? It would allow new precedent for not-technically-slavery, which might make rulings of Law and Evil easier. Or harder. Which would get Marra more or fewer souls - wait no. Marra's followers are easily ruled Lawful Evil. It would get other gods more or fewer souls.
The goal, then: make Law easier, make Evil harder.
How would this affect the world?
More things-that-Marra-likes-that-aren't-technically-slavery.
More crime by not-technically-slaveowners, if they get a big enough boost to Law. Kireh doesn't like that personally, but Marra would be fine with it as long as they fulfill their duties. ...Prioritize making Evil harder, if there's any precedent to be set.
While simultaneously winning the case and not offending the judge.