DSis is six years older than me. Looking back I can see how kind and considerate she was of me, though at the time I only ever resented how much more freedom and independence she had.
Not so surprising that an eighteen year old has more freedom than a twelve year old, never mind a twelve year old and a six year old.
I would not have said we were close. She always wanted DC and was not fussed about a career. My career means everything to me and I do not have my own DC.
However, when DF died unexpectedly and DM struggled to cope, I just felt that we had each other's backs. So many siblings I know argue or disagree about how to look after a widowed parent, we always seemed to just know and agree what was best.
We worked outs good division of Labour looking after DM, I live much further away so did anything possible remotely. I also kept my word that anytime DSis could not make a daytime appointment I would take a days holiday. I even cancelled a weeks holiday to cover done hospital appointment (though I don't think she knows that ).
Its mostly down to her that we have such a good relationship. She was always good to me so I try (belatedly) to not cause any more trouble.
We get the whole family together occasionally. She knows that her children are my heirs. It's all good. I'm very lucky.