Haleigh Poutre born on Feb. 24.
Poutre goes to live with her aunt, Holli Strickland, after her biological mother was deemed by the state to be an unfit parent, a decision the biological mother disputes.
Strickland adopts Haleigh as a single parent.
State Department of Social Services receives 15 allegations of abuse or neglect, but only the last report is substantiated.
Sept. 11: Haleigh is taken to Noble Hospital in Westfield and is unresponsive and then is taken to Baystate Medical Center in Springfield, where she is diagnosed with a severe traumatic brain injury.
Sept. 20: Holli and Jason Strickland are arrested on assault charges in Haleigh's beating.
Sept. 22: Holli Strickland is found shot to death alongside her grandmother, Constance Young, in what police believe is a murder-suicide.
Sept. 26: Jason Strickland files a motion asking to be declared a ''de facto" parent.
Oct. 5: A judge issues an order allowing Haleigh's breathing and feeding tubes to be removed.
Dec. 6: Supreme Judicial Court hears lawyers for Strickland seeking to block the state from removing life support.
Yesterday: the Supreme Judicial Court rules that the state can remove Haleigh Poutre from life support.
SOURCES: Supreme Judicial Court documents, Boston Globe archives, Kathleen Hennrikus of the Globe Staff