I'd encourage you to look for a local chapter of https://girlswhocode.com/, see if there are after school programming clubs in your city (or start one), or sign up with https://hackhands.com/ and get paid to mentor.
I had a class of middle school girls who had never seen a line of code before. By the end of the course, they had learned enough of the basics of HTML, CSS, and Python to build a personal homepage and a simple game.