I get pretty detailed with my languages - but I usually only write up a few of the rules for myself - not a lot that would help other people :p

I do make cases for noun functions, like:


Naossatu ----subject or nominative----- the world (is, does, ...)
Naostusv ----object or accusative----- (something affects) the world
Naosstu -----vocative----- O world!
Naossotu -----possessive or genitive---- the world’s
Naossutu -----indirect object or dative---- (given, sold, etc.) to the world
Naossytu ------ablative------ (something is done) by the world

(Naos means the world - na (big) and os (dirt/earth) and I conjugate my verbs. :p

Of course, in this language, the syllables have different meanings based on *where* they are placed in the word...


Anyway, I used to pull the names out of the air, but I ended up (eventually) not liking the way they sounded together. Looks like your sister did pretty well, though