Yeah, I was watching it just confused as to why she wanted to burn the entire city down only to have to rebuild it??? I guess she’s tight with the masons’ Union who’s super slow at the moment and in need of focus employment, and is looking for the kickbacks from the contracts, but still..... and to think she was observant enough earlier in the episode to realize the country doesn’t like her so she decides to lash out with a Sherman's March ala “if they didn’t like me before, they’re gonna love me now” type afternoon.
And if I didn’t know better, she looked like she had the flu more so than just being Mad - Stannis seemed a bit Mad murdering his brother by a shadow baby and his daughter burned at the stake, all the while calm & focused in his mind that it was a means to an end, but Daenerys just seemed like the “feverish” type Mad brought on by a debilitating virus - a far cry from her earlier seasons’ atrocities, when she was cool as a cucumber, when crucifying slavers, sacking cities, burning the old ladies/Dothraki, locking that dude in the vault, executing Sam’s fam, etc. She was always cruel/viscous but did so with a methodical/calm madness of conqueror rather than a raving lunatic.