Yep I totally agree, mistakes of adults but the kids are the one facing consequences.
I agree, but also even without all that, shes a little psychopathic, poisoning the original saintess just to speed up the process is really deranged.
I agree that what she did was undeniably evil and I'm not defending her. I don't even like her. But unlike many villainesses who are doing evil things "just because they are evil" I can at least see why she turned out the way she did. The only villainesses who normally get such a privelege are transmigrators, who are in actuality MCs.
Honestly, things would have been much better for Esther if Lavienne was simply the saintess. Sure, she wouldn't have hooked up with Noah, but she wouldn't have had multiple lifetimes of suffering from Lavienne either. I don't know if one happy life makes up for 17 hellish ones.
Lavienne is a villainess, yes, but it isn't entirely her fault either. It's probably her father's and pretty much everyone else's fault who put so many expectations on her because she was supposed to become the saintess. It's ironic that he's the one at fault for her not being one simply because he couldn't keep it in his pants.
Her rage at Esther is also kinda understandable, even if not justifiable: Esther basically stole her purpose in life. She was born to be the saintess, everyone assured her she would become one, even the previous saintess, and then suddenly she wasn't one. She might have even found out at some point in previous lives that Esther was her half-sister, which would twist the knife even more.