Seems I Meant To Reblog This Months Ago - Tumblr Posts
Yes!!! It would be nice to see ONE character get everything they want. But I think it’s likely that Elia’s, Doran’s and Arianne’s goals will diverge because of three events that happened at the end of AFFC and ADWD:
Quentyn Martell got roasted by Dany’s dragons when she was “away”
Arianne devised a failed plot that ended with Myrcella Baratheon losing an ear
Young Griff/fAegon (I think he’s a fake Targ) landed on Storm’s End with most of his army
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Elia Sand may not have lost enough to turn her back on Dany, but as stoic as Doran tries to be, and as much as he believes in Dany, I think he’ll regret allying with her when he learns that his firstborn is dead. He may also overcome this for the sake of future prospects.
This is why I’m fascinated with GRRM’s work with Arianne and the Sand Snakes: everyone but Allerys is consumed with getting vengeance on the Lannisters, by going so far as to harm the children who had no part in the destruction caused, either because the adults are already dead or too hard to reach. 
And by keeping the narrative in Arianne’s POV, we really experience an exasperated, “too little, too late,” reaction to Doran waiting until Arianne had made a mistake to tell her his plan. Even Quentyn did not get enough information on Daenerys from Doran, to know how to approach her and the dragons. And let’s not forget that Dany doesn’t even know the details of his plot which involves her, unlike Arianne.
It makes me wonder: What if Arianne reins in her impulsiveness long enough to see which Targ rises first in Westeros? What if Doran is skeptical of fAegon and bitter towards Dany? What if Arianne independently decides to bind herself to fAegon’s side? What if this causes Elia Sand’s desires to diverge from Doran Martell’s? Will one or both of them still be an ally when Dany finally lands on Westeros?
Never forget that Tywin Lannister sent his men into the Red Keep for the purpose of murdering Elia's children and that Gregor Clegane raped and murdered Elia after killing her son. Then 15 years later, Clegane murdered Oberyn while he attempted to avenge his sister by going after her actual murderers. Can't wait for Elia's niece and namesake, Elia Sand, to avenge her aunt and father by killing Clegane during one of the coming battles.
Hell, as part of the coming wars, El might even help finish her father's dream of restoring the Targs to the throne while fighting the family who ordered and benefitted from the deaths of Elia and her kids: the Lannisters. After all, Oberyn and Doran were the ones who arranged the betrothal of Viserys to Arianne as part of the larger plan of getting the Targs back on the Iron Throne. They also sent Quent to try renewing the alliance. It would be fitting for El, as well as the rest of the Martells, to join with Dany when she arrives. Which seems to be Doran's goal.
Dany and El would be great friends since they have not only similar goals but so much in common as independent and fierce horse girls. They'll absolutely love each other ❤