Ive been arguing this shit for years with people. She doesnt give a FUCK about anything other than being the queen of westeros. Sure she isn't the outright personal bitch to match Cersei but she's killed how many people? She'll kill anyone who dares get in her way of taking what is rightfully hers. All that night king shit was just a sidetrack on the way to Kings Landing, just like everything that happened in essos, an entire half continent she curbstomped then peaced out on to go rule a place she'd never even really seen. Rhaegar himself could rise from the grave and she'd tell him to piss off so she could have that throne.
This is true. Dany has been pretty much 100% focused on one goal since season 1: Reclaim the Iron Throne. Tyrion made a good point: Girl walks into fire, gets free dragons and recruits all sorts of people, then you can't be surprised if she believes in destiny. I mean, all the dice rolled her way UNTIL she got to Westeros (Unsullied, Dothraki, Dragons, liberates people, etc), then it became a shit sandwich. She never really suffered a true setback that she couldn't come back from, but it was interesting to observe what she did when she did suffer setbacks.
Khal Drogo dies: Burns the witch alive on the funeral pyre
Slavers: Has them executed wholesale, crucified to crosses as an "eye for an eye" punishment for their treatment of the slaves
Barristan: Feeds random noble to her dragons to make a point
Dothraki: Burns them alive for not siding with her
Tarlys: Melts their ass down for not bending the knee
Granted, most of these were enemies and painted in a clear negative light, so the audience cheers when they get comeuppance. But look at the core behavior: Love me, kneel to me, or fucking die. Blood & Fire is the house motto for a reason. She gets to Westeros and her first instinct, burn the fucker down, is rebuffed by everyone. You're better than that, don't be that guy, don't be the evil invader so the people love you, etc. But it was in her nature and it is what she knew how to do things and get results. Over the past couple seasons, you start to see her bitterness as she begins to realize that she should have gone with her gut and ignored counsel. If she had followed through with her initial plan of just flying to Kings Landing when she arrived and melting the keep into fucking slag, she would have won. But instead, because she listened to allies and friends and those she trusted, she has lost almost everything and is only left with the option she wanted to start everything with: Burn the fucker down. Except now she is doing that from a place of rage and hate, and instead of just seeing Cersei as her enemy, now she is going to see everyone that put her into this position as an enemy as well.