[Disambiguator]

Here's a telling passage:

She and her coven go into the woods around Berlin several times a year to stand naked in a circle and call to Baldur, the god of light.

Lucifer was the "Bringer of Light", hence his name.

[orionblamblam]

Lucifer and Baldur are not synonymous, anymore than Christ and Lucifer are synonymous (isn't Christ also associated with Light?).

In any event, one wonders why Wiccans are following a Norse god.