I have made some revisions to the script/story.
I propose that the Fox has the Mole's glasses at the beginning and he places them next to the hole, setting a trap. The mole then comes up looking for her glasses and the fox darts behind a tree, watching and sniggering.
As the audio clip goes on the mole is just looking for her glasses, unable to see, while the fox darts between trees to make her more terrified.
Finally she finds the glasses and puts them on, she can now see again. She turns around to look behind her and says "hello". The fox jumps out from behind a tree and shouts "BOO". The mole screams and falls down the hole leaving the glasses behind. The fox is left there laughing mischievously.
Here is the new storyboard: