This is a continuation of our very off-topic discussion in another thread. I know it's a bit weird because it's starting in the middle of a debate, but feel free to post about anything GOT related. 
Not to mention, she didn't even kill Myrcella in a way in which it couldn't be traced back to her. So - she sent a boy who is, for all intents and purposes, her nephew back to King's Landing right into the hands of the most powerful woman in Westeros who's daughter she just murdered. Great plan, lol.
I have read up into a Storm of Swords and bits and pieces of the next two. I remember reading briefly about Ellaria but not so much, but I did find this quote from the book that has a much stronger version of Ellaria:
“The time is ripe.” Obara tells Ellaria.
“Ripe for what? To make more skulls?” Ellaria turns to the Doran. “They will not see. I can hear no more of this.” Areo Hotah is sad to see her go. She is a good woman he thinks.
Lady Nym says, “I know she loved our father well, but it is plain she never understood him.”
Dorans gives her a curious look. “She understood more than you ever will, Nymeria. And she made your father happy. In the end a gentle heart may be worth more than pride or valour.”
Oberyn said they don't hurt little girls in Dorne. We see that from book Ellaria, but not show Ellaria. I just don't feel she's complex in the show at all. She becomes a cookie-cutter villain who doesn't have all that much strength of character. She's super hot though.

I see what you're saying, and I definitely agree that no justice was served for Elia and the Targaryen children. My focus really has only been on the particular circumstances of that trial.With unjustly I mean, in a moral sense... if that explains it? Like, the Lannisters are mostly evil (honestly with Tyrion, Myrcella and Tommen being exceptions), and they are amazing politicians and great at manipulating the game, so to speak. If we were to leave everything to the law that the Lannisters know very well how to use to their advantage, then all the ''injustice'' would be justified. I mean... I don't really know how to explain it I hope you understand where I'm trying to get at here...
Like, if Tywin and the Mountain were executed by King Robert as was the law, then Oberyn would have still been alive, and both he and the entirety of House Martell would have gotten the closure they needed for Elia's rape and murder (as that of her children). But it all worked in Tywin's favor instead, and Elia's justice was never served, and therefore by law Oberyn's death was unjust.
I don't think my dislike of Ellaria in the fifth season is because I'm unhappy that she became a grey character. That's one thing I love about Game of Thrones, and my favourite character is Jaime Lannister who is about as grey as they come. My problem with Ellaria is that her behaviour and character development is a bit absurd. I get that there's a deep-rooted hatred between the Martells and the Lannisters, and I understand why the Sand Snakes would want to avenge their father's death. But Ellaria knew full well that it was Oberyn's choice to gamble with his life. She knew he wasn't being forced to do it. I know grief can make you do crazy things, but it doesn't make people repeatedly try to kill an innocent teenage girl who had nothing to do with anything just to avenge your lover. I think it shows how poor not only her character development is, but her character is as well. Given - this could just be the writing - I was not a fan of the entire Dorne subplot. I kinda felt like I was watching a cheap action movie and not Game of Thrones.But yeah, you're right regarding the Starks, I got a bit too clouded there I guess. I still like Ellaria though, although I feel like you changed your mind about her because at first she was shown as ''one of the good guys'', which then in your eyes led to disappointment as you believed Myrcella didn't deserve to die (don't take me wrong, I don't think she deserved to die either). But yeah, it is important to remember that George R.R. Martin never intended there to be ''good'' and ''bad'' guys. That's what so beautiful about the characters; they're so complex you can barely label them.
Not to mention, she didn't even kill Myrcella in a way in which it couldn't be traced back to her. So - she sent a boy who is, for all intents and purposes, her nephew back to King's Landing right into the hands of the most powerful woman in Westeros who's daughter she just murdered. Great plan, lol.
I have read up into a Storm of Swords and bits and pieces of the next two. I remember reading briefly about Ellaria but not so much, but I did find this quote from the book that has a much stronger version of Ellaria:
“The time is ripe.” Obara tells Ellaria.
“Ripe for what? To make more skulls?” Ellaria turns to the Doran. “They will not see. I can hear no more of this.” Areo Hotah is sad to see her go. She is a good woman he thinks.
Lady Nym says, “I know she loved our father well, but it is plain she never understood him.”
Dorans gives her a curious look. “She understood more than you ever will, Nymeria. And she made your father happy. In the end a gentle heart may be worth more than pride or valour.”
Oberyn said they don't hurt little girls in Dorne. We see that from book Ellaria, but not show Ellaria. I just don't feel she's complex in the show at all. She becomes a cookie-cutter villain who doesn't have all that much strength of character. She's super hot though.