Answer:
The nurse is going through disenfranchised grief.
Step-by-step explanation:
Disenfranchised grief is the term used to refer to a situation where a person is experiencing grief that is not recognized as normal because the person who died is not part of the family of the grieving person. That is, let's say a neighbor of yours died and you felt mourning over the neighbor's death. Since the neighbor is not your family, this grief is not recognized by society as normal. Another example of this can be seen in the question above, where the nurse mourned a patient she accompanied.