Are there any ways to teach my younger sister to be independent?

Building up her confidence is a good start. I also have a sister who greatly depends on us until she was in high school. The only thing different I guess, in our situation is that in the process we build her self confidence. Having a self confidence will enable her to decide on her own and to be independent. That's actually the first step. Next question is how do you build it? In my case, when it comes to decision making, I had always told my sister that she should have a criteria before deciding on things. First, will making that decision make you happy? Second, will you make your family happy or proud? And lastly, will it not be against your values as a person? If these are answered by a yes, possibly she is in the right track. And before I forgot, the most important thing to think about before making such decision is to check on the pros and cons of what you'll be doing. We as her family, don't decide for her. We give hints and insights so to help her realize on what she needs to choose. And when she started to make decisions and it turns out her decisions are right, there's your self confidence. By the way, how old is your sister? If she's younger than sixteen, I guess don't push it too hard to let her be independent although you can start by just building up her confidence. Enjoy it while your sister is still your family's baby. When she grows older, she'd be able to make it on her own. My sister had already grown to be a fine lady. Though she asked for advise on stuff, I can say she's independent, more independent than what we thought she'd become.

I think, you gotta encourage her to build confidence like doing outdoor activities, involve her in activities which creates bonding and social relationships. Push her up to develop her own independent. It is a somewhat kind of long process before he can do it, but it all depends on how reactive she is. But continue on pursuing i know she can do it soon.