Comes with Dragons, Warriors who don't fear death, Dothraki (known for the raping and brutality), Iron Islanders (known for their pillaging) and she the hero!? (Show of course adds Tyrells and Dorne to try and balance it out/they cut out Aegon so who else do they side with!?)
That's not how this works...her character is a deconstruction of the Chosen One. She is given a sad background and mostly seems like a good person, but doesn't always make the best decisions (Killing 163 Noblemen...also the Nobleman she burned was from Astapor). Her arc in a Dance with Dragons is choosing between peace and compromise (the hard way) or through fire and blood (the easy way). Now she mostly keeps the peace, however by the end of ADWD, she seems to choose Fire and Blood.
What? By the end of ADWD she is shitting in a field having done pretty much nothing other than bang Daario for 10 chapters. Her capabilities as a leader are in doubt but it never really gets to any sort of villainy. The other slaver cities are attacking her, there isn't really much prospect of peace unless she allows slavery.
And in the show she burns a Mereenese noble then later she goes back to Hizdar and he is on his knees begging not be burnt and she tells him she will marry him.
Dany has shown traits of being The Mad Queen in the show and Tyrion was clearly unsettled by the carnage brought to Westeros by her Dothraki hoard. Her insistence that Jon bend the knee is another tip to her being power hungry. So the argument that the show has whitewashed her seems pretty unreasonable as well.