If she wants to do software then Python with one of the many excellent free and non-free books for kids available. Just look them up on Amazon. If she wants to

If she wants to do software then Python with one of the many excellent free and non-free books for kids available. Just look them up on Amazon. If she wants to get into hardware start with a RPi or Arduino. Also get her running Linux. Start with something simple like Mint or Ubuntu. Teach her how it is "like Windows and OS X" but a bit different. Do some basic command line stuff like making a folder, opening a file, etc. Setup Minecraft which I would assume she already plays if she likes tech. Show her mods, maybe even a little Java to make mods although I feel Java with its strict OOP and compile/run can be a bit daunting for even an adult so maybe wait until she understands Python a bit. The main thing is just explore all the different things. Tech is awesome today as if you have a computer you can get so much stuff free thanks to the FOSS community from the OS to everyday software to programming languages to books etc. And little hacker hardware like the RPi is affordable by almost all with a little spare income.