Erikson's widow, joan erikson, suggested an additional stage of psychosocial development called

I believe the answer is: Gerotranscendence

According to Joan, Gerotranscendence stage refers to the process when elderly started to conciously make peace with the fact that they're eventually going to die. In this stage, they tend to make various attempts to fixing past regards and make plannings for their resource allocation after they'reawaysed awat.