Alexa's father
Well, I can imagine who her fantasy father is: Doogie Howser, M.D.
Listen to Alexa's mother during the episode "The Ice Queen Cometh" at the following link:
http://openhulu.com/watch.php?show=Doogie+Howser%2C+M.D.&episode=T he+Ice+Queen+Cometh&id=71
http://inthe80s.tripod.com/