From what I know, her parents have been exemplary but she has a heavy dislike for her brother. She mentioned that when they were growing up, he always belittled and discredited her even though she performed better academically and such, but at the same time she spent most of her childhood with her brother and his friends.
Now she seems to downright loathe him yet still engages in family activities where he’s present and was also doing some work for him since he asked. She also mentioned that she loathes people who make themselves into victims and her brother apparently falls into that category, and likewise does my former friend.