Mother Hen With Eggs, Father Cock Died.

Hi Im new too breeding budgies, unfortunately whilst I was away my father looking after our birds didn't realise the father was dead inside the nest box. However, im worried about the mother as she is sitting on eight eggs and there were only 5 when we left. Will she cope or do I put another male in her cage to help her out? She has her own cage as we were having others going into her nest so I separated the couple into there own cage. But now the cock has died what do others suggest I do. Thanking you.