Step sibling trope

I did have a step sister before. And please forgive me everytime I see her face my blood boils to the max level but i endure.
I feel bad because I hate her for no reason. She always looks up to me and always copy what I do. And she always tells me and my daaaad that she wants to be like me. I feel pressure for whatever i do because my dad be like ' eyy someone's looking up on u '. I wana cri for hating her.
I do treat her normally but my insides feels like i'm always on my period. wew

Anyways step mom and dad got separated. So I high key feel relieved. Right now if i'm in mood i ask her if she's doin ryt. I'm still not that hard hearted. (〜￣△￣)〜