Simple question, on the grounds that the other parent was a ordinary enough human being, like Shirou Emiya, with no special powers or inhuman traits that would be passed through mating, regardless of what magic and powers they themselves possess, what would any children Rider/Medusa gave birth to be like? What would be their exact nature? What inhuman traits would they have? What abilities would or should they have? Would their eyes be like their mothers?
A somewhat related question to the others I've asked, what sort of mother do you think Rider/Medusa would be if she had children? Would she love being a mother?