How can an African American girl make her hair grow longer?

Yes! There are plenty of things you can do to make your hair become longer, but first you have to make sure that your hair is healthy. If your hair isn't in good condition it is extremely difficult for it to grow longer. It is great that you have adopted such a healthy lifestyle, so keep that up. A major reason hair loses some of it's length is because it breaks off before it can get the chance to grow more. This usually happens because of harsh products that are being applied to the hair. It might sound crazy, but every few months get a half inch trim, and condition your hair every week, if possible. If you want to make your hair softer and stronger, find a conditioner with avocado oil. Hope this helps!