I made my sims Holli and Patrick both vampires and made them try for baby in a hot tub then after it announced she was pregnant she read half of a pregnancy book and only drank plasma juice during her pregnancy. Neither one of them have the fertility treatment. She gave birth to a girl and boy -Nathan and Emma- (both vampires) and then she wouldn't take care of them so social services took them away. I would like to get another pair of mix gender vampire twins, can anyone offer suggestions without using the fertility treatment or the apples and watermelons? I do not like feeding my vampire sims normal sim food, so I limit them to the Drink from Sims option, plasma fruit and plasma juice.