co-grandniece-in-law

The granddaughter-in-law of one's spouse's sibling.

My co-grandniece-in-law is a good person.

co-grandniece-in-law

Spouse's grandnephew's wife.

My co-grandniece-in-law is a good person.

great-great-great-grandniece

Sibling's great-great-great-granddaughter.

My great-great-great-grandniece is a good person.

great-great-great-grandniece

Sibling's great-great-great-granddaughter.

great-great-great-grandniece.

co-grandniece-in-law

Spouse's grandnibling's wife.

My co-grandniece-in-law is a good person.

co-grandniece-in-law

Spouse's grandnibling's wife.

co-grandniece-in-law.

grandniece

Sibling's granddaughter.

My grandniece is a good person.