AMITA for hating when my friend tells me about her relationship with her sister?

My friend has a great relationship with her sister. she calls her her everything. it’s sweet, adorable even. her sister is 10 years older than her.

I have an older sister that’s 7 years older and for a majority of my life she was my abuser. she would hit me, basically tell me to die, call me an inconvenience even when i was 5. she majorly impacted my life in a negative way and even had a few CPS reports because of her. we don’t have a relationship anymore.

every single time my friend talks about her sister i get kind of annoyed. i don’t say anything obviously but i just get a feeling inside. my friend had to pick me up from my house after my sister abused me and i had to stay with her for a few days.

it frustrates me slightly that she talks about it when she knows how i am with my family. i do feel happy for her that she has that relationship, it’s adorable. but i wish she wouldn’t tell me about it.