Final answer:
The most therapeutic response by the nurse would be to provide the daughter with information about a caregiver support group.
Step-by-step explanation:
The most therapeutic response by the nurse in this situation would be to provide the daughter with information about a caregiver support group. By offering information about a support group, the nurse is acknowledging the daughter's concerns and providing her with resources and support to help her in her role as a caregiver. This response shows empathy and promotes self-care for the daughter.