@SupremeCommander even if she divorced she wouldn't be able to inherit it, and considering her brother is more accomplished AND obviously, a male i doubt he has any reason for it...
Also although the empire's sword is the most likely to rebel there's no way killing his wife would achieve...
Characters are the isekai stereotypes, same with the story, no overarching plot, dialogue is bland and feels copy-pasted, for a 7.17 i thought it'd be readable at least but its boring to boot. 3/10, if you're looking for good trash just read something like wortenia senki instead.
It'd be nice if she does end up dying at the same time she did originally and her son remains as the maim character, with the first season being just a setup for his character and how her change changed him as well in the long run, but then again that'd mean taking a risk which isekais dont need...