Alien abduction of vampires?

I've had my male vamp get abducted by aliens. I play with mod so abductions happen fairly often in my game. He did get pregnant. The baby is alien. It's kind of strange because she's a toddler right now....she doesn't look like an alien even though in CAS it's showing as alien. She does have the blue skin, like an alien but has his human features (hair color, eyes). Very strange genetics...