I agree with howdy that you are doing a very good job providing the learning environment for your DD. My DS6 started using iPad not long after he turned one year old and started learning alphabets from the videos and games we downloaded for him. He was obsessed with it. He also learned the phonics together with his older brother and started watching and playing anything with phonics. He also liked to draw so we downloaded this paint pad on iPad and he just draws whatever he wants on it with different colors and brush sizes with his fingers. He still loves it to this day.
As long as you control the screen time, I would say tablet apps and videos for educational purposes are good sources for youngsters who are eager to learn. They can learn so much from it. Honestly we did not think of teaching my DS alphabets that early but he just picked that up by himself.
I would say no need to worry about if your DD is bright or gifted yet (probably not until school age). Provide as much stimulation as possible. Find things she can do that she's playing and learning at the same time to keep her interested.
Best of luck to you!
