Iirc, Koji Fox stated in an interview once that the very few half-breed children that would come to be take heavily after the mother, e. g. most of the racial features, with the father only influencing certain details/refining them. Hilda being the 'special snowflake' there.

And in the Quest line about the Ruby Princess, they talk about the child of an Auri woman and a Hyur man which looked mostly Auri, only 'with alarming few scales'.