Each one of us have our own pace. You will have to give her as much time as she would need.
[ Gives his hand a gentle squeeze. ]
I am certain that if she needs you, if she needs your help, she will tell you. Siblings' bonds are not so easily broken.
As for yourself, I would advise that find what you truly want to do for yourself. I understand that you would want to live your life on your own terms, and still please your sister. Find out what is important to you.