Well , i got some reference of books..
1st according to Tribhuvan das L shah ( historian ) ,
2nd is from the book of Radhakumud Mukherji's book of History,Chandragupt Maurya and his Time...
3rd ref book is Virendra kumar gupt's novel Vishnugupt
Chanakya,Amarsatya prakashan-delhi. ..
** From all above resources - we can say that Durdhara was daughter of Dhananand !!