Rivka on the Camel subjugating the Nachash

Did Rivka fall or as Onkelus suggests gracefully dismount? 

How does Rivka continue the Tikkun of Chava?

 “The splendor of Yaakov was a semblance of the splendor of Adam.”

Eisav had a mark resembling a nachash on his thigh; this alluded to the fact that Eisav was a representative of the nachash. 

 Rav Yehuda HaNasi and Antoninos שני גויים בבטנך TWO NATIONS ARE IN THY WOMB — 

The True role of Eisav in this world.