Ayla Reynolds never got to see her second birthday. The little girl's father, Justin DiPietro, reported the 20-month-old missing seven years ago, claiming someone broke into his family's Waterville home and abducted her. It was a call that sparked one of the largest investigations in state history and drew national attention.

Investigators say there was never any evidence to support DiPietro's claim and eventually determined that Ayla was likely the victim of foul play, though no charges were ever filed in the case. 

Last year, a judge officially declared Ayla is dead.

RELATED: Judge declares missing toddler, Ayla Reynolds, legally dead

The judge's ruling paved the way for Ayla's mother, Trista Reynolds, to file a wrongful death lawsuit against DiPietro. 

Her attorney will brief reporters Monday on plans to file a lawsuit claiming DiPietro caused Ayla's death. 

RELATED: Ayla Reynolds' paternal family breaks silence, says they believe she's alive

Ayla disappeared in 2011 while staying at her paternal grandmother's house on Violette Avenue in Waterville. Police say DiPietro, his sister Elisha DiPietro and his ex-girlfriend Courtney Roberts were in the home the night Ayla went missing. 

Investigators don't believe they've shared all the information they know about Ayla's last night in the house. DiPietro has since moved to California.