My aunt, as my father's sister, is my family here, not just the same surname. When grandparents were alive, my aunt went back to her mother's house more often, so as a nephew, her feelings can be imagined. From the aunt's point of view, she is also close to her nephews and nieces, because nephews and nieces are children of her brother or younger brother's family and also of her own family, so her aunt's relatives and nieces also have feelings.
Although she is married, sometimes when she talks about her family, she still uses "our village" instead, because in her mind, her home is her own village. Therefore, in the eyes of rural people, the relationship with aunt is close. Even if the aunt dies, she is still "attached to the ribs" and will not be affected by the death of the aunt.
My aunt is a relative of my mother's side. As my mother's sister, my aunt is a relative of my family in the eyes of rural people, not my family. In fact, from the mother's side, she and her aunt are a pair of female siblings. Supposedly, this blood relationship is not far away, but in real life, we are always related. Sometimes, after menstruation's death, the two menstruation basically lost a lot of contact, so there was a saying that menstruation died and broke his roots.