No, and No. Quetzy is Mayan, though it's understandable, and Shiva (Shiuwah) is most likely based on a European frost goddess
There is a scandinavian frost goddess in nordic mythology named Skadi. BUT, shiva is the name of a hindu god who dances the dance of destruction on top of a fire. i believe shiva's wife/consort's name is kali.
Yes. I was saying it's entirely possible they were trying to reference Siva, a Slavic fertility goddess, since the FF Shiva and the Hindu one only have being Blue in common.
Of course, they could have just pulled a Stupid, like they did with Odin.