Julia Roberts' Sister Blamed 'Mother & So-Called Siblings' For Driving Her Into 'The Deepest Depression' -- Nancy Motes' Suicide Note Revealed

Five months after Julia Roberts' half-sister died, Nancy Motes' suicide note has surfaced, revealing the troubled 37-year-old blamed her mother and "so-called siblings" for the deep depression that caused her to take her own life.

First obtained by the Mail Online, the suicide note confirms that Motes felt her Pretty Woman star sister was so cruel that it "drove me into the deepest depression I've ever been in."

"My mother & so called 'siblings' get nothing except the memory that they are the ones that drove me into the deepest depression I've ever been in," Motes wrote in her emotional last words.

"If anything should happen to me, John Bailey Dilbeck gets whatever he wants of my possessions & ownership of Lucy."

Motes was engaged at the time of her death to John Dilbeck, who is now embroiled in a nasty legal battle with Roberts and her mother Betty over control of Motes' estate.

Bashing Roberts even in her final moments, Motes wrote that the actress' abuse was so bad that "I burst into tears b/c I woke up."

Motes — a former production assistant on the hit FOX show Glee — was found dead on Feb. 9 after drowning in her bathtub following a deadly mixture of nonprescription and prescription pills.

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Roberts' deceased half-sister wrote the note in three sections; one to Roberts and Betty, one to Dilbeck and one addressed to "everyone."

"And I am so sorry."

As RadarOnline.com exclusively reported, Roberts, 46, and Betty, 79, attended a secret funeral to bury Motes in Georgia, one in which many of those close to Motes were not invited to grieve alongside the famous family — including her fiancé, Dilbeck.

“It really hurts,” Dilbeck told RadarOnline.com. “I was very frustrated and hurt by it. I needed to voice being hurt, because Nancy’s voice is being silenced.”