In the 3 chapter we find out theat she takes sword lessons, so we might be able to expect some cool action sence where she saves the heroine

I think I'm strangely into these josei or yuri novels even though I'm a man. Perhaps it's because I'm a man that I'm so intrigued by them, regardless of what the answer to that is, this novel is quite the snack - the only way to describe it since it's quite short but fulfilling story nonetheless. Starting out as you would expect of this niche 'reincarnated into villainess but because you're actually being different from how they were in the game/whatever media it was in there's this and that changes happening' genre or whatever it quickly develops into rather mild intro and then quickly ramps up into a full 100% in quick few chapters, however despite the timeskips prevalent and details glossed you're not feeling like you're missing out on much. Quick tempo to be sure, which some people dislike.

That tragedy tag there? You don't notice it until late into the story but it's not what you'd expect, although being foreshadowed almost explicitly - you don't actually think much about it because really, how many times did the "Downfall" Event actually made it's appearance in it's full force? About half the time? So it hits you when you don't expect it and it does good on it's threats.

Character development is nothing stellar even so I believe it to be the one of if not the key element story that pivots the plot. You see how this disliked in the game older brother develop turning into something more than an unpopular choice, to become such an important part for the development of others it's like he's the deuteragonist or a tritagonist if you consider the heroine to be the second protagonist.

The bad guy is fate itself. The flags, the triggers, the setting. These characters, these people are fated to fall into a certain timeline of events. However monkey wrench thrown into the machinations - changes caused by our protagonist sets it into another route. Yes because of the changes fate chose the absolute worst outcome of bad end to the heroine, To everyone involved. But the outcome of this Rube Goldberg invention is something else, something that falls outside the scope of fate, a future truly of their own, this story ends, but their story, TRUE STORY is just beginning. Brought upon by none other than our protagonist and little help from her brother.

Till death do them part. Or so I say but with reincarnation involved the first time. Maybe, till death do them part in this world.

her kingdom wasn't destroyed in 3.5 seconds and her training had actually mattered

Maid that ran away??? Hello??? Where you at?? Family that died? Her brother??? Where's the despair???? She literally just left her people to die and they didn't bother writing more about her feelings towards it?

A female servant, Arai got with the opposing countries prince. I though the author would've used this to do something about the war, even describing the prince as proactive but nothing came out of it.

I didn't had much expectations when I started this novel, but, as it developed, I fell in love with it. This novel is so cute. I loved to see Rosalind and Eugenie falling in love, cutiesss. And the sibling relationship between Rosalind and her brother is so beautiful!

Although I had a good time reading WRV, I think the end could have taken more time. I'd like to read the protagonists showing their sadness, grief and process to heal. And also their life with the children they wanted to adopt. And maybe the actual war could have more scenes... But it might not be the author's point, and that's fine.