Buffy and Spike are a couple, she wants a baby. Willow helps her go to a diff. dim. to get pregnant by William. (not the 19th century) I think this William lives in a cold, remote location. He falls in love with her, gets himself vamped, somehow gets to her dimension and holds her hostage in her aparatment throughout the pregnancy. I thought it might be a Herself fic, but I can't find it. I remembered it because of the find-a-fic request for Spike/Dawn pairing where Dawn gets turned down. He turns her down at some point in this fic, then goes back later and says he will sleep with her one time if she really wants it. They don't follow through. | 
