Grace for meal...? Oh well.

The phrasing sounds a whole lot more like Californian eco-Wiccan than the traditional British variety I practice, but that's just a matter of different branches. WIcca is an extremely broad term these days. What may be more problematic is that that sort of pagan would probably spontaneously explode if they saw someone do what Willow does to the deer at the start of season six, so it feels a bit out of character to me to have Willow use it.