I remember that discussion from... somewhere else, and there seem to be varying opinions on it. I've heard it spelled like jarmara would (or at least I think so), on the other side, considering she is a von Überwald, it might be spelled like I would - kind of Germanic.* A matter of opinion, I guess.

*Let me try... "Ang-" like an English speaking person would spell the "ung" in "Hungary", and then, with the stretch on the second syllable, "wa" (als English w). (Any idea what I mean?)