One way is to not share it at all. Don't post it online or show it to anyone. Another option is to tell the person directly that you don't want them to read it and explain your reasons.
Well, you might consider writing it in a format that's difficult for them to access, like a special code or a language they don't know. Or, if it's on a platform, you could set the privacy settings to exclude that person specifically.
You could keep it private or password-protect it. That way, only those with the right access can read it.
It could be that they had other priorities and didn't have time to continue. Or perhaps the story took a turn they didn't like at that particular place.
It could be that the content of the manhwa is not suitable for her or has a negative influence on her mindset. Or perhaps she's spending too much money on it and it's becoming a financial burden.
Maybe they lost interest in the story or found it too repetitive.
Yes, someone can see a stop story if they have access to it. Maybe through a website, a book, or if it's shared by someone who has it. But it also depends on if they are interested in looking for it.
Maybe they found the story too confusing or hard to follow in the raw version.
You can just try to avoid the platform or app where that person's story is posted. It's a simple way to cut it off.
You can try unfollowing or blocking that person. This usually stops their stories from showing up in your feed.
Maybe they think it's not suitable for her or they have some concerns about the content.
Possibly because they believe she should focus on more traditional forms of literature or they have a bias against manhwa or English-language materials in general.
You can try blocking that person. Once blocked, you won't see their stories anymore.