Hello & Welcome, Mooncat1. My regrets on your tragic loss.

This is a sad situation. Giving a depressed person a week to "show they can be happy" is ridiculous and cruel (my opinion).

The stress of trying to hold on to the relationship is probably not helping you deal with the underlying depression and grief. I do not know what you can do, but caring for our present self is frequently a necessity for us depressed folks.

For reference:
Relationships & Communication Forum
Partners of People & Caregivers Support Forum

Please make yourself at home here.