
I really wanna know her origin, like is her dad a royal lineage or smth?? Is there something about her that she doesn't even know?

Yeah, like... I forget if this was said in the story at the beginning or only alluded to, but I think all we know is that her dad was a (powerful?) human ice mage. It does make one think with her powers and all,, although, ngl, I do like the idea that her dad was just an average ice mage and her having such amazing ice powers isn't because her dad was great. (I forget how magic works in this world as in, how much og it is down to genes and stuff). I could also see them pull the trope where her dad was a noble or had power somewhere/belonged to a powerful family and she gets that inheritance to make life easier in some ways (in this case, her and her brother).

Okay, so, I went ahead and dug for spoilers. So, here's your SPOILER WARNING for anyone reading this!!
Yep, turns our her paternal line is that of a human royal family. Not sure if there exists only one, that was unclear, but the forum seemed to only talk about one kingdom when alluding to this so I assume so. The current king is their uncle, the younger brother of their father. Nothing else wasn't really said about her family background tbh.
I don't really recommend going to look for spoilers yourself as I had to dig for these, and ended up spoiling pretty much the whole story and major plot points for myself. Normally people would've separated something like this but I guess this wasn't found that important, and to be fair, considering what I read, I get that.
Ps. Not going to say what I read if anyone asks, because truth be told, barely understood what they were saying and I refuse to try to retell any of it if you want to look for spoilers yourself just look up "the female lead wants to make me her sister-in-law novel spoilers" and you'll find the link for the novelupdates forum.

I appreciate you to tell us as much as u can understand and not the ones u didn’t because I’ve ruined myself for other stories because the thing is the mtl they do is never accurate and sometimes portray the wrong pov because some readers couldn’t wait and mtled everything. I’d rather wait than receive the wrong info !!
Woww i really like the sergio trio, the villainess badass vibess uwu