LOL! :D
Yeah, a lotta Pashtuns haven't heard/seen the word before.
It comes from "qrrate" which means something like "blabbing" :p Ever had a parent/mean sibling telling you, "Dera qrrate ma kawa!"? lol! Yeah!

So then "Qrratu" is a person who talks/blabs a lot, and "Qrratugai" makes it feminine since "qrratu" doens't have a gender, you see. And, of course, being myself, I wanted the entire PF to know I'm a female, soooo... :D

Oh, and "Qrratu" is also the name for a lawyer in Pashto. Ask someone what they call a lawyer/wakeel in Pashto; it should be "qrratu"