Finally! Heading over there in a bit. The dynamic between the two of you seems so awesome. Great tale you shared there, Deb! My younger sister and I didn't get along when we were younger, but that's because our age difference is so much closer. The 11-year gap did the trick, I feel. You're mature enough to care for her like she was your own, and it gave you the opportunity to have a leg-up into becoming a nurturer.
Also, cool coincidence. My younger sister is also named Andrea haha!
I had similar experiences to you with the older of my two brothers. Too close in age, and he was a cheeky bugger!
Ha, there we go with another commonality.
It's amazing how many commonalities people have even with the difference in generation and location!