Gandhari Vs Draupadi

At the End of War - Both Lost All Their Sons

1. Gandhari Lost All her 100 Kaurava Sons through Dhritarashtra and Then
2. Draupadi Lost All her 5 Sons of Pandavas

Krishna Intervenes Later to Give Back Life to Grandsons of 

1. Gandhari Grand Son Through Her Daughter Dushala  who Dies Due to Fear of Attack By Arjuna
2. Draupadi's Adopted Sister Subadra's Grand Son Parikshit who Dies Due to Attack By Ashvatama

to Continue the Dynasty