LONG POST ALERT
The thing with that is that those actions were somewhat commendable. Even staring deadpan at her brother when he got his golden crown....that nigga was trash and wasnt gon be missed. And her threatened her several times.
I've seen a lot of talk about how she treated the slavers in mereen the leading up to this ep but again, I commended those moves. She tried to do what was right by the people by listening to the concerns of hundreds everyday and locking up her dragons. She put a cease fire on harming the masters cuz she wanted peace...then that slave dude violated it and she had to kill him.
Meanwhile the sons of the harpy was still attacking her and none of the masters admitted it nor did they stop it. In danys eyes, if none of yall are responsible then all yall are responsible. She reopened the fighting pits as a gesture of good faith - they tried to kill her and drogon there and they fled the city....Tyrion brokered a reasonable peace offering of 7 yrs to get their shit together at no financial loss to them. But even grey worm and missandei advised him against it because force is the only thing they'd respond to. Once again, them niggas attacked the city in danys absence. Like at what point is dany allowed to punish people who have drawn the line in the sand against her?
Even her burning the tarlys was fine by me cuz killing traitors to prevent future insurrection is common practice.
I wouldn't necessarily say all those things were foreshadowing she'd go mad...cuz she was "winning" for the most part before hitting Westeros so it wasnt apparent. I will say that some things spoke more to how she had to be pushed and prodded to doing the "right" thing and not using force from jump. But ultimately force got her point across quicker and with less pushback and fuckery along the way. If all she needed was a fuck it attitude and drogon, KL and the 7 kingdoms woulda been hers in s3. But had she did the diplomatic shit and won the war, who knows how many more personal losses she woulda suffered doing it that way. Fuck it take the straight line approach and be done with it.