Mass. Gen. Laws ch. 127 § 133C
The family members of a deceased victim may represent the victim at any parole hearing for a prisoner serving a sentence for a crime which resulted in the death of such victim or for a crime for which a prisoner is serving a sentence for life in a correctional institution of the commonwealth, except prisoners serving a life sentence for murder in the first degree who had attained the age of 18 years at the time of the murder and prisoners confined to the hospital at the Massachusetts Correctional Institution, Bridgewater. For the purposes of this section, family members shall include: parent, stepparent or guardian of the victim, spouse or person with whom the victim lived and in a relationship similar to marriage, child, stepchild, grandchild, grandparent, sibling, aunt, uncle, niece, nephew and guardian of the minor child or stepchild of the victim.
Mass. Gen. Laws ch. 127, § 133C