Sansa, Arya, and Jon have lost much more than Dany, yet have not used that as a point to go around conquering and burning down cities.
Dany has been a power tripping flip flopper ever since she got a taste of power. She got off on "freeing" the enslaved so they would feel indebted to her and those who didn't were reprimanded.
She executed a former slave for murdering a suspected master in front of a city, and then immediately went on to take all of those masters hostage and burn one wit her dragons to scare them for information.
When the slaves dont bow and grovel to her she resorts to handling them just like the slavers and people justify it by "well the slaves dont know how to follow rules so she has to teach them how to be civil people through violence", despite the fact that she has no idea what she's doing and the only way she has is violence.
She goes on and on about being the queen and how her father was murdered, yet murders others' fathers for not bowing to her.
She's been on a path upward based solely on manipulation and fear of the mystical, and has finally run into people who dont give a fukk about that and actually want someone they can stand behind.
And she can't handle that.