Click on the walls as fast as possible.

Story:
You've died of cancer 4 days ago, and your family moan in grief.
You've left your husband and one year old daughter.
Currently you are residing in the fourth dimension.
You will not find a peace until you give your family a sign.
It will let them know that you are now in a better place and they should continue with their lives.
You've struggled, tried to conjure a wind, take down a glass from the table or at least touch your husband,
but the blurry walls always stopped you.
Your body starts fading away, and your power is weakening every second.
There is not much time any more for you in this dimension, for one last time try to break the walls.