In spite of what is, generally, a nice, neutral article, Maggie Fitzroy refuses to use a capital letter when writing about Pagans. Does she do the same when writing about xians, or Jews, or Buddhists, or Muslims?
And, note the quotation marks around the words high priestess:
"On the full moon, we use the energy from that to bring good things into our lives," said Holly Charland, the temple's 'high priestess.'"
Does Ms Fitzroy use quotation marks when discussing a Catholic "priest," a Jewish "rabbi," or a Muslim "iman"?
People, it's really, really simple. If you capitalize the names of some religions and/or religious groups, you should capitalize Pagans. If you don't put quotation marks around the religious titles of other celebrants, don't put quotation marks around Pagan priestesses.
Simple. Uncomplicated. Really.