aunt

Parent's sister.

My aunt is a good person.

co-grandniece-in-law

Spouse's grandnibling's wife.

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

half-sister-in-law

1- Half-sibling's wife.
2- Spouse's half-sister.

My half-sister-in-law is a good person.

stepgranddaughter

1- Stepchild's daughter.
2- Child's stepdaughter.

My stepgranddaughter is a good person.

stepgranddaughter

1- Stepchild's daughter.
2- Child's stepddaughter.

My stepgranddaughter is a good person.

step-co-nephew-in-law

Spouse's stepnibling's husband.

My step-co-nephew-in-law is a good person.

stepgranduncle

1- Stepgrandparent's brother.
2- Grandparent's stepbrother.

My stepgranduncle is a good person.