There are plenty of sun gods and goddesses to choose from but, pretty much at random, I have picked the Japanese sun goddess Ama-Terasu as The Bad Witch's Goddess of the Week.
My trusty Concise Mythological Dictionary says that the Japanese royal family claimed descent from Ama-Terasu, who looked after the welfare of the government.
In 7th century Japan, festivities were held each year to celebrate Ama-Terasu's re-emergence from a cave, where she was said to have been hiding.
The irreverent site www.godchecker.com/ adds:
"She had to take refuge in a cave following a bit of domestic violence. This caused a stoppage of sunlight and she had to be lured outside the barricaded entrance which involved a jewelled necklace and her reflection in a mirror. What Goddess can resist a little flattery? And she does have a sunny personality."
In my opinion, few women will turn down an invitation to go out along with a gift of jewellery :)