My cousin's wife appears to suffer from NPD. Or should I say the family suffers from her NPD?
Last year, during my aunt's terminal illness, my cousin asked me to basically babysit his wife and run interference between her and other family members as she doesn't get along with his siblings (and he blames the siblings).
While her mother-in-law was in hospice, N repeatedly complained about minor inconveniences (needing to kennel dogs, alter summer plans) ...