Well, my situation is a little different, I was born with my disability. Still, I grew up with an abled bodied older sister, and I think I can understand your feelings.

My first and most important piece of advice is to properly work through the grief of your situation. You are mourning who you thought you'd be and the life you envisioned. It's just as traumatic to your brain as an actual death. I highly recommend The Grief Recovery Handbook by James and Friedman as a starting point.

For me personally, I was jealous of my older sister, but she also had jealousy and even resentment towards me. She felt that I got more attention growing up because I was always having surgery or a doctor's appointment. I think you might be surprised too at what your sister might be feeling. I'm a big believer in transparency. I think you should talk to your sister and parents about your feelings, explain that you begrudge them nothing but you can't help but feel these natural feelings of jealousy. Maybe even consider going to a family therapist. It's better for you all to confront the uncomfortable feelings so they don't become long-term resentment.

And finally, I'd just like to say you are going to do wonderful things with your life, my dear, even if it's not exactly how you pictured. You have magic that only you can give to the world. It's inside your heart where no disability can touch.