Hours before a New York woman drove her vehicle off a boat dock into the Hudson River on April 12, drowning herself and three of her four children, she posted a Facebook message apologizing for the murder-suicide.

“I’m sorry everyone forgive me please for what I’m gonna do…This is it!!!” Lashandra Armstrong, 25, wrote.

According to the New York Daily News, the distressed mother and Jean Pierre, the father of Armstrong’s three youngest children, had an angry confrontation at her Newburgh, N.Y., home before the murder-suicide.

A neighbor told the Daily News, “ was banging on the door real loud. He called to her, ‘Open the f—— door!’ He was there about a half an hour; he was on the phone as well.”

According to reports, Pierre was served with an order of protection earlier in the day stemming from an incident in February when his 2-year-old son was left at home alone. The barefoot toddler was found wandering the streets, which were covered with snow.

Orange County District Attorney Frank Phillips said no charges will be filed after police questioned the father of the deceased children. The man reportedly had a dispute with Armstrong at her house in Newburgh, N.Y. just before she piled the children into their black minivan shortly before 8 p.m. that night.

Armstrong’s eldest child, La’Shaun, 10, managed to roll down a window and escape the submerged vehicle.?According to TIME magazine, the boy climbed out of the water and waved down help from a woman who took him to a nearby fire station to alert rescuers.

It took fire crews an hour to recover the van, which was submerged in 10 feet of water roughly 25 yards offshore, according to TIME.

Armstrong and three children, Landon Pierre, 5, Lance Pierre, 2, and Lainaina Pierre, 11 months, were all found dead inside.