The right answer is normal, especially in the first months of bereavement. It is normal for people to have symptoms similar to depression after losing a loved one; Depressive mood and a negative outlook on the future, mainly in the first months. There is no consensus about the months that a duel should last and each person faces it in different ways, however, if the duel lasts for more than a year it is likely that the person will take on professional help.
I hope my answer can help you.
