Not really a spoiler, talking about what I see as aspect that I think leads it to be a 7 star work instead of an 8 star, and also my thoughts on making a similar work.
So, a critical mistake you can do in a work is mention a "timelimit" too early. This absolutely kills the drive of many readers to continue reading your work as they think "I'm close to the end, but I don't want this work to end so let's drop it here to give it a proper send off (that'll never happen)". You could make it achieve the opposite, but only after appropriate build-up to make them want to continue reading start to end (you'll still lose people if you're slow at updating or don't release in bulk)
I honestly see alot of potential for this work, but instead of single-person interstellar travel, the MC works as a cargo technician at a space station (yes ss13, cause Cargonia reigns supreme).
Otherwise you could go the space-opera action route and talk about how the MC found a way to create various armaments and eventually makes their own station/company/nation.
Alot of potential, but I think the author was intending to showcase their art more than story-telling, as such the work falls short.
I appreciate the telling of a potential corporate future, but I don't think this is the most fitting media for this type of story, it'd be better as a literary work with sketched art, or just with more storytelling about the scifi world instead of just short life of girl in spaceship