How Do i Stop My Sis From Reading Dark Romance Novels?

Recently, my sister has been reading dark romance novels. I’m not very well aware of all the novels. the only one I could recognize is, ofc the most popular one, hunting adeline. I want to stop her.

Ofc, I can’t do that directly, so I made several unsuccessful attempts to explain to my mom what’s in the book. But my mom took no action. another problem is I can’t directly explain to my mom what’s written in it. And my sister keeps those books completely hidden. When she saw me trying to stop her, she just hid the books even more.

Besides this, she also likes many cringe reels like, you know, the reels about dark romance. like i cant give an example but those one like k1l1ng and shit for your girl fantasy , type shit.

How do I stop her?

I cant talk with her and ask her to stop. cuz we both argue alot and have bad relations. so talking to her wont work.

( If any mf is here so comment "ignore her" then fuckoff. she is my sister and i have to protect her from shit )