Killer grandmother reveals in chilling seven-page letter to cops why she gunned down her son's ex-girlfriend as she loaded her one-year-old baby into a car in posh NYC neighborhood

A terminally-ill grandma who fatally changeable her son's ex successful a grisly murder-suicide elaborate allegations of maltreatment successful a seven-page note.

Kathleen Leigh, 65, claimed that her erstwhile daughter-in-law Marissa Galloway, 45, tried to alienate her four-year-old girl from her boy - nan girl's begetter - successful nan statement recovered successful her pocket, sources told nan New York Post.

She besides wrote that nary 1 believed her and her son's claims that Galloway abused nan young woman - an accusation New York City's kid work investigators doubly wished were unfounded.

The missive - scrawled pinch nan words 'For Police' - was recovered connected Leigh's assemblage aft she shot Galloway successful nan caput and backmost as she was loading her one-year-old into a car spot successful nan backmost of a parked conveyance connected nan Upper East Side Friday morning.

Leigh past took her ain life by shooting herself successful nan head, constabulary said. 

The four-year-old, who was not pinch her mother aliases grandma astatine nan clip of nan shooting, had been nan taxable of a years-long custody conflict betwixt Galloway, a typical acquisition teacher, and Leigh's son.

Over nan people of nan battle, some sides person accused nan different of kid abuse, according to nan Post. 

In immoderate of nan reports, nan girl's begetter would declare that his girl would get location pinch bruises connected her arm, but investigators recovered nan accusations unfounded. 

Leigh had moreover brought nan claims to her neighbors successful a Manhattan flat building, wherever she has been surviving for nan past 3 years pinch her son. 

'She ever talked astir nan truth that she had a erstwhile [partner] that was harassing nan hellhole retired of her because I had kid services astatine my doorway 1 evening asking if I had ever heard immoderate problems adjacent door,' said neighbour Meryl Feidelman.

'I said, "No, nary she's a lovely, beautiful mother, a beautiful woman."'

But Galloway besides had a history of domestic violence disputes pinch her partner related to nan custody battle, according to NYPD's main of detectives Joseph Kenny. 

Five reports and 2 complaints had been revenge pinch nan NYPD betwixt July 2021 and November, but nary arrests were made.

The kid is now successful nan custody of Leigh's son, arsenic nan NYPD continues to analyse nan execution - which occurred conscionable steps distant from Mayor Eric Adams' residence.

She had been pinch her begetter erstwhile her grandma murdered her mom on nan usually quiet tree-lined thoroughfare conscionable earlier 9am.

Two guns were recovered astatine nan crime scene - a 9-millimeter weapon from nan sidewalk and different weapon successful nan Target container Leigh had connected her. 

Police are trying to corroborate whether aliases not Leigh had owned nan firearms during her clip arsenic a probation serviceman successful Chicago - wherever she worked for 17 years earlier retiring successful 2014.

But officers judge she acted unsocial successful nan killing, and person nary grounds that her boy knew of her plans, according to nan Post.

Still, Galloway's family could person opinionated for astatine slightest immoderate custody of nan 4 twelvemonth aged nether typical circumstances that would beryllium met 'when nan mom is murdered successful acold blood,' a custody lawyer told nan Post.

Her different kid - a one-year-old woman whose begetter was reportedly a sperm philanthropist - is now pinch her maternal grandparents successful New Jersey.