To move Ariane, you just need to click the cursor where you want her to go, preferably with the feet hanging on the cursor.
As for the words, on the screen it should just show and will disappear when you move one or 2 steps.
Maybe turning off the game and/or rebooting the computer might help. If that doesn't maybe it's a bad install and need to be reinstalled.
A post at glitches might help if they don't work out.