It's a little better, but it's still long winded. Also I realized I forgot to mention that there's a distinction between the blurb you send to query agents and the marketing blurb. If this is already self-published, then oops my bad, we'll look at marketing blurbs instead of query blurbs. The difference is that a marketing blurb has more rhetorical questions and punchier sentences, while in a query blurb it doesn't need rhetorical questions.
I'll use this book has an example: A Canticle of Two Souls
When war comes, sacrifices must be made.
I think just delete this, you don't need a cliche. If you're writing a marketing blurb, then if you follow that Canticle formula:
A brave samurai woman. A one-armed Empress. A dying clan searching for a breakthrough in a demonic war.
And yes, I know that the Canticle blurb has a mouthful of a sentence which combines sentient sword and revenge plot, but I'm just gonna ignore it. Generally you want punchy sentences. No need to reinvent the wheel.
I think mentioning the "mysterious warrior" makes it too wordy. She gets captured while on a mission. That's the first failure and the rut she gets into. Maybe the plot twist is that the mysterious warrior is Megumi in disguise, I don't know, but that character is not important right now. I mean, how else would she be captured? By a not-mysterious warrior? By a farmer? By a robot?
The "isn't prepared to fight" is a negative sentence, so it's hard to understand. It's a regression from your previous blurb. I think the main draw is the perception of emerging technology that will intrigue historical fiction/political fans. So for example, that sentence could be, "There, she discovers canons and guns, technology that she's never seen before. In order to warn her clan about these 'iron dragons...'" It gives you a glimpse of her perspective and also emphasizes the point of "foreign/new technology" if she doesn't have the vocab for it.
Megumi has always been seen as weak because...
It's kinda redundant, like you don't need "woman" in the sentence. It would be more interesting if the sentence is active, like "After losing an arm, Megumi is constantly mocked as a cripple."
When a betrayal ends with her parents assassinated, she’s thrust onto the throne.
You don't need to mention a betrayal because by default, an assassination is usually a betrayal. And deleting the "throne she doesn't want" part neuters her characterization, because a reluctant hero is a lot different from a plucky one.
I'm conflicted with the Corruption paragraph. I still don't know what it is. It could be a zombie outbreak, it could be shadow powers, it could be temptation to demonic pacts? What are the stakes with this corruption? "Infecting the hearts of loved ones"? Uh... doesn't really sound scary or important.
I don't know who the Chosen are, and I don't care. At this point they sound like a generic big bad oligarchy. Or some organization that recruits child soldiers.
I still recommend that the last paragraph would connect the dual POVs if you don't want to give away the main antagonist. Like what's the theme? Two vastly different upbringings bring different strengths to the table? Since you say this novel has both political intrigue and action fantasy, then maybe play that genre blend as a strength.
In the Canticle example, they end the blurb on the theme of "trust." So the overreaching character arc is whether the two characters can trust each other.
I am glad you mentioned the one-armed Empress, that is definitely unique and you're on the right track. So you want your blurb to try to accomplish any, or hopefully all of these:
Like the Canticle blurb mentions a sentient sword and mind control magic, because those are just cool. No other reason than, "Cool!" I'm sure they influence the plot but they're also just cool, it's why fantasy readers read fantasy because you won't find that in historical fiction.
I personally think, from what I've read of your blurbs, the "cripple proves herself" and "facing scary technology" are interesting. Maybe they're not the most interesting parts of the book. Maybe your story is heavily action-based and resembles sword-and-sorcery, and that's the interesting part. I don't typically read that genre so my perception might be skewed. Definitely consider what your readers say is important or stood out.