The National Cemetery Administration manages our National Cemeteries, including the JBER National Cemetery in Alaska for deceased members of our Uniformed Services.   Here is a link to their webpage for "Available Emblems of Belief for Placement on Government Headstones and Markers."  You should note all the 63 emblems of belief currently recognized; in particular #37 is for Wicca, which the woman who gave the sermon said she was a member.

http://www.cem.va.gov/hmm/emblems.asp