Star Wars, Ahsoka's age by the Original Trilogy?

I want to make a fanfiction using Star Wars: The Force Unleashed and Ahsoka Tano from Star Wars: The Clone Wars kids cartoon show, but to do that I'll need to know how old she was during The Force Unleashed and each of the 3 movies of the original trilogy. As much as I love Star Wars, the ';BBY and ABY'; calender thing is confusing.Star Wars, Ahsoka's age by the Original Trilogy?
Lets see.





Time in star Wars universe is measured in years before or after the Battle of Yabin which is the battle at the end of A New Hope. So 5 BBY means 5 years before the Battle of Yabin, 10 ABY is ten years after Battle of Yabin. Similar to our calendar Before Christ or After Christ.





Now: Ahsoka Tano's age and Original triology.





1. In the 2008 animated film Star Wars: The Clone Wars and the following series she is depicted as a 14-year-old Togruta female.


2. The Clone Wars ocurred between 22 BBY to 19 BBY


3. The Battle of Yavin is the battle to destroy the First Death Star at the end of Star Wars Episode IV: A New Hope. That is 0 BBY.


4. The Original Triology ends by 4 BBY after the Battle of Endor, (Star Wars Episode VI:Return of the Jedi)





So, during the Original Triology Ahsoka Tano would have been:


* 36 yrs old - Star Wars Episode IV: A New Hope


* 39 yrs old - Star Wars Episode V: The Empire Strikes Back


* 40 yrs old - Star Wars Episode VI: Return of the Jedi





Of course if she survived the Great Jedi Purge led by Darth Vader from 19BBY to 1 BBY.Star Wars, Ahsoka's age by the Original Trilogy?
why's it confusing? it's like BC - AD
http://www.youtube.com/watch?v=KZfpx0MlgaA