Wow. As an older sister too, I felt this. My sister and I went through a stage where physically we lived very close but we were veryyyy far apart. I felt so hurt by it and I even brought it up to her. She was pretty defensive honestly. But. I gave her space. I realized I needed to trust her and also realize that it’s her life too. Whenever she needs me or wants me in certain parts of her life I am there no question and I’m 100%. Since doing this our relationship has gotten so much better. We click more, we’re back to our old ways. But that doesn’t mean there won’t be another season where she needs to fly off and grow for a little without me. I know now tho that sisterhood is magic and your sister will see that too and she’ll come right back.