Demon/super baby

Im looking for a baby fic where spike and buffy has a child that has slayer powers like buffy or its own little vampire side like spike

In the Barbverse (Rahirah's world that she created beginning with A Raising in the Sun, then Necessary Evils, and the A Parliament of Monsters. During the course of this on-going saga, Buffy and Spike have several children, some of which are slayers, some vampires (or vampire-like). I forget in which section they have the first child, but in PoM, which is an ongoing series of shorter stories set in that world, they definitely have four or five. It's a classic series, and deserves to be read right from the beginning - babies or no babies.

I'm sure there are others, but that's the one that comes to mind right off the top of my head.

I think their children have abilities in this, from what I remember...
Consumed by lilladybug
Set at the very end of "Chosen," Buffy grabs Spike's hand and refuses to let go.

Ahead of her time plays on the theme of gifted children a little. Great story, one of my faves, and can be found here on SR xx

Thanks