Santa Mail

In my neighborhood their is a house that does Santa Mail. Kate was so excited to write Santa a letter this year.  I didn't get a picture of the actual letter, but it said

"Dear Santa,
 I hope you can make me the Zoomer Dog
-Kate"

She wrote and addressed the letter all by herself, and we went and mailed it!

Also, notice on the first line on the envelope that she sometimes writes in mirror images.  I'm wondering if this is a left handed thing?