You know, the sister looks like her eyes are lined in Kohl, so maybe something Egyptian?

"Bastet ( Bast, Ubasti )
Egyptian sun, cat and of the home goddess. As a sun goddess she represents the warm, life giving power of the sun. A goddess of the home, pregnant women and of the domestic cat, although she sometimes took on the war-like aspect of a lioness. Normally said to be the daughter of the sun god Ra, but sometimes her father was said to be Amun. Bastet was wife of Ptah and mother of the lion-god Mihos. She was also associated with 'Eye of Ra', as such she was a instrument of the sun god's vengeance. She was depicted as a cat or in human form with the head of a cat, often holding the sistrum. Her cult was centered on her sanctuary at Bubastis in the Delta region. A necropolis has been found there, containing mummified cats."

or better yet:

"Mafdet
The first deity to be mentioned who is half-cat (domesticate). She appears to be associated with the protection of the king's chambers. OR Panther Goddess Her ferocity prevails over snakes and scorpions."

or

"Pachet (Pakhet)
Lioness Goddess of the Eastern Desert and a night huntress. "

or

"Tenenit
The Egyptian goddess of beer."