"A word with a long pedigree in English is 'triskaidekaphobia,' which comes from the Greek phrase meaning 'fear of the number three and ten.' A fear of Friday the thirteenth adds the name of the Norse goddess Frigga, who was the wife of Odin and the mysterious, sometimes scary queen of all the gods."
~The Word Origin Calendar, Friday, January 13, 2012
I'll explain carefully to
that her new nickname of "Frigga" is an honorific, but I can't promise I won't occasionally use it as a quasi-homonym in times of frustration.