She can definitely draw better than I can, but the other comments are right about how she's drawing with "both" hands. It's not difficult to draw/write something with your main hand and write a mirror image of it with your second hand.

I didn't realize this until someone showed me how easy it was to sign your name with your main hand and simultaneously sign a mirror image of your name with your second hand.

It's interesting how the brain makes it easy to do that.