bostonfred
Footballguy
But that's the whole point. She was threatened. It's not just the mad queen thing where she suddenly went insane and started killing people. She was about to lose the throne to jon snow and there was nothing she could do to stop it.
The moment jon told her about his lineage, she immediately realized that she was going to lose the throne to him, even though he said he didn't want it.
She begged him not to tell anyone. She told him what would happen if he did. Bran said hey this is your choice. He told sansa and arya anyways.
She tried to get him to marry her. Is that all i am to you? Your queen? He refused.
Her whole story is her ascension from the property of her brother whose only attributes were her t&a to the khaleesi of carl drogo who used his power to rule to the mother of dragons who ruled her small clan to the breaker of chains who had an army of unsullied to the queen of mereen, and all the lessons she learned along the way brought her here.
She learned that a claim to the throne didn't mean much. Her brother wanted carl drogo to win him his throne back. He got a crown for a king. She wanted to get into quarth. They almost left her in the red waste. She wanted a ship. The spice merchant told her to f off. She told the dothraki who she was when they caught her alone. They dumped her with the other ex khaleesis.
She had tried to rule with her claim alone. The dothraki waited until carl drogo died and left.
She learned that having the people's love mattered, but still wasn't enough. She saw that she didn't have the people's love in westeros. She saw that jon and sansa did.
She had tried to rule with their love alone. And it worked with the unsullied. But it wasn't enough I'll end slavery, she said. We want slavery back, said some of the slaves. We want the fighting pits back, said others.
She tried to rule with justice and love. She executed that dude that killed a master against her orders. They all hissed at her. Mhysa is a master, said the graffiti. Kill mhysa, said the sons of the harpy.
She learned that people only follow strength. Jorah said it time and again about the dothraki. She learned it when she burned the other carls in dosh kaleen - because they'd threatened her power. Remember, it wasn't the physical threat. She'd been rescued. She killed every one of them because she wanted to rule the dothraki.
Everything from season one episode one led us to this point. Like Michael corleone learning how to rule with fear but losing his humanity, she had learned the lessons with disastrous results.
And when she arrived at dragonstone, she was ready to take kings landing by force, but she was advised not to. It cost her dearly. She responded by destroying the money train and killing thousands.
When jon and his allies tried to get a zombie in the dumbest plan ever, she saved them. It cost her a dragon, but allowed her to get Cersei to help fight the dead. Nope, betrayed again.
She fought the army of the dead, and her armies got crushed. Jon snow mentions oh by the way I'm the real king. Good talk. Later.
She went back to king's landing and they killed her dragon and her best friend. She went back to her advisors and found out one had betrayed her, because the other had told him her secret, which had been told by jon. Everyone she knows except grey worm and drogon is dead or has betrayed her.
And she still talks to jon and tries one last time, only to get rejected.
When she said "all right then, let it be fear", she had exhausted all other options. There was no other option that allowed her to be queen. That was the threat, writ large by everyone around her betraying her in her final hour.
Stand by for a record low when it's something nobody predicted for the ending. 
