She's a goddess and entered the mortal realm in order to interact with some mortals. She decends from the heavens and lands infront of you

She is a princess with training in swordfighting and magic that ran away from home in order to experience adventures and prove herself.

She is a space mercenary (this is sci fi) that has picked you up from some human civilization on some random planet. She wants a kid from you no matter what and doesn't care if you agree with her desires.