
The setting makes no sense.
First the King's speach. The society is coming to a standstill because women are dismissing luxury and learning how to fight, and because the nobles don't want a liberal trade system. WTF?! How does any of those things relate?! And even if they did, their society would be undergoing a revolution, not a standstill.
Second, her incompetent family. They don't know how to manage their lands? How did they survive until she was old enough to take over? Though looking at her sister it's pretty obvious that they never bothered to discipline and educate their daughters. So I guess they just are that incompetent.
Third, Lilian. She sounds like one of those stupid transmigrators. She doesn't even bother to try to understand how things work in their world. How tf was she raised? In a bubble?! Sure, one can disagree with arranged marriages, the luxurious lifestyle of nobles or women not being allowed to fight, specially when everyone has magic. But she acts like she came from another world entirely. Instead of going "So this is the way things are, but I think it's unfair and I want it to change" she goes "You are all evil! It's my way or the highway!" and seems like she is willing to use force to get what she wants. Is she insane? And the weirdest part: SHE HAS FOLLOWERS! Other people agree with her! WTF?!
And they look pretty rich too. If they think Lilian is right, shouldn't they do something about it? You know, like actually helping the poor and not just trowing a beneficent gala here and there? Charity helps, but it doesn't solve the problem. The most wtf moment was that lady judging the MC for consuming luxury good when she herself was using a fancy dress with a huge jewel on her neck. And who tf buys stuff in the palace?! If she wanted to go shopping shouldn't she go to the city? Or have the ones selling it come to their mansion? No sense at all.

On her first life, what was their age difference? She refered to herself as a woman past her prime and a non-fruit-bearing flower. How old was she? 20? 25? 30? And he was pretending to be in his 20s when he was actually 14.
She didn't know, so it's not her fault. But it's a bit disturbing to see a romance between a lady in her later 20s and a 14 year-old boy.
What do you think?

She was 17 he was a 14 year old pretending to be 15 so they were really 3 years apart
Mr. Han's milkshake brings all the boys to the yard but he doesn't want any of them. Poor Mr. Han.