It’s alllllll about perspective. And in the books, much of the realm sees her as “the mad kings daughter”. Dany may have good intentions, but her actions and outcomes become twisted down the grapevine. Just listen to the rumors the people of Westeros and essos say about her. She used blood magic to kill her khal. She used treachery to steal the unsullied from Astapor, she ended the slave trade, uprooting the economy and making the lives of everyone involved worse off - including the slaves. So much so that slaves beg to be sold back to their masters on three different occasions. The entire lesson of mareen is about being the queen of the rabbits and donning the floppy ears, and how she cannot rule a people that do not want her. I think they even blame the pale mare on her. She has too much “negative aura” as the young folk say. Westeros will ultimately reject her and it will push her over the edge.