Heroine is kidnapped

Wakes up in desert world, after being found by locals

Planet has 2 suns, one smaller one bigger and three moons. Night sky is more purple than black.

Local life is based on Bedouin culture (must research).  

Heroine is scared, has amnesia but knows she shouldn't be there based on differences between her and her rescuer.

Hero is curious about the creature he found laying amidst the strange ruins (the space craft). He finds her strangely appealing and wants to explore their differences. 

He helps her acclimate to the new planet. 

The locals have no spacefaring capacities, so there is no escape there. The original kidnappers come back and try try to capture the heroine again. 

They fall for each other and she decides to stay with him instead of pursuing her going home.