The computer!

As you look up at the computer it clicks in your head, I can type a message to her! You quickly jog over to the desk and start to contemplate ways of scaling it.

After trying to get a grip on the legs of the desk, climbing up the chair, and trying to open the drawers to climb up, you remember that duh the cables are hanging down in the back.

You head behind the desk and happily start climbing up the forest of wires until you reach the top of the desk. You take a minute to catch your breath and scamper over to the keyboard. Using all of your weight you manage to press the space bar, and the screen lights up revealing the desktop covered in various icons. You race over to the mouse and use it to navigate to the notes program, qnd proceed to launch it.

Hopping from letter to letter you manage to type out "Help! I was shrunk! I am on top of the desk!".

You nod to yourself and sit on the desk, leaning up against the tower. Now we wait.