No, don’t think we’ve seen the room or the castle before, very sure we haven’t seen the crest and colors before.
KFChimera – your idea could work.
It was never said for which kingdom Cora would be 5th in order of succession for becoming queen, let alone which rules of succession would apply (there are different possibilities). But it ‘s safe to assume it was for King Xavier’s kingdom, and probably had little to do with Eva at that point. Unclear is if she meant queen as ruler or just as a title for the wife of a king (term is sometimes unclear), but let’s assume she meant as ruler, it makes more sense. Then order of succession had to be not limited to royal blood line nor to male line. Rules of succession can be rather complicate, it’s not even always the case that the eldest son of the ruling king is the first in order of succession.