Death in childbirth is common for Kaede's people, not for Kor's people! There isn't any specific rituals for death in childbirth. Kaede's people, the Irenians, will usually mourn the lost child as well though.

Funeral rites for Narakyian is being wrapped in fabric and dropped into the Sand-Sea. Irenians are usually buried, though fishermen and people of importance will be given rites and thrown into their seas.