As used in this chapter, the term:

(1) “Concurrent custody” means that an eligible extended family member is awarded custodial rights to care for a child concurrently with the child’s parent or parents.
(2) “Extended family member” means a person who is:

(a) A relative of a minor child within the third degree by blood or marriage to the parent; or
(b) The stepparent of a minor child if the stepparent is currently married to the parent of the child and is not a party in a pending dissolution, separate maintenance, domestic violence, or other civil or criminal proceeding in any court of competent jurisdiction involving one or both of the child’s parents as an adverse party.