Mona both was and wasn't exactly unique for Sinfar.  Born the daughter of a fertility goddess and a drunkard, she grew up knowing her nature, and she accepts it happily.  

The woman clearly inherited the body of a goddess, as she stands 5'7, a firm tone body with a full heavy chest.  She is usually seen wearing little clothing, not as a means to show off, but just because she's comfortable.  One wouldn't be completely out of line in assuming she's a whore, given her appearance, though she'll usually correct that.  

She's come to this land to see what the world has to offer, and her mother recommended Sinfar, knowing her daughter would enjoy herself here