I can't tell if you are being obtuse or if you really don't make a distinction between different humans you encounter.
Your relationship with your sister is the same relationship as with your father? You treat them exactly the same in every way even though they are individuals and (most likely) very different people? Even though you likely have had vastly different life experiences with each of them?
Well actually if you look a little bit up on the quote you just made of one of my posts in this same post of your's, you would see that my mother, father, and sister are different people and I treat them accordingly.~ Meaning each has their own personalities and dislikes, etc. and how I treat them goes along with those things.~
As a "relationship" I would consider my "relationships" with my mother, father, and my sister to be the same because I do not hide one thing from 1 while telling it to the other, nor do I think of them in a way that how I relate to them is different.~ I relate to my mother as much as my father, although they are different sexes with different experiences, I can relate to them both.~ Maybe it's a Latino culture thing, but if we think you are 'family' then we treat you like family and we welcome you and we love as if you were our own brother or sister.~ ^_^ And I would not hide anything from you or treat you differently if I considered you my family, unless you had certain preferences about some things you would rather I not talk about or ask of you, in which case I would respect your wishes.~