Don’t mess with dojo’s teenage ninja

Like many martial-arts training centers around the nation, the 9-year-old Boulder Quest Center has found that its classes are most popular with adult women. The need for self-defense – evening the odds against a stronger attacker – is a powerful motivator to lure women to a dojo.

But leave it to the young to add a little zip.

Zippora Abraham “Zippy” Paiss, who has attended classes at the center for seven of her 14 years, recently earned a second-degree youth black belt in To-Shin Do, a Japanese ninja martial art form. She’s the first youth in Colorado, second in the nation and…