GRANTS PASS, Ore. — A woman who made an online appeal for money to help care for her autistic son and disabled husband has been accused of throwing her 6-year-old boy to his death off a bridge on the Oregon coast.

Police said Jillian Meredith McCabe, 34, called 911 from the bridge in Newport as darkness fell Monday to report what she had done.

“I just threw my son over the Yaquina Bay Bridge,” McCabe told the dispatcher, according to a probable cause affidavit filed Tuesday in Lincoln County Circuit Court.

Later that night, a body was reported in the water at a bayside resort, and police said it was the boy.

Andrew McCabe confirmed Tuesday that his sister-in-law had written an appeal on YouCaring.com describing how she cared for her autistic son and her husband, Matt, who has been unable to work since developing multiple sclerosis and a mass on his brain stem.

The appeal ended eight months ago, after raising $6,831 toward a goal of $50,000.

“If you are a praying person, pray for us,” Jillian McCabe wrote. “I love my husband and he has taken care of myself and my son for years and years and now it’s time for me to take the helm. I am scared and I am reaching out.”

Andrew McCabe also confirmed that Jillian McCabe had posted YouTube videos, one showing her husband in a hospital bed and their son pushing a button to raise and lower it.

Another shows her son sitting in a hammock, smiling with a cup of juice and engrossed in an iPad. When she asks if he is happy, he says nothing. When she tells him to say “help” if he wants a push in the hammock, he says, “help.” Still another video shows the boy holding a stuffed toy lion and throwing coins in an indoor fountain to make a wish.

Jillian McCabe was expected to be arraigned Tuesday on charges of murder, aggravated murder and manslaughter. She has not yet had a court appearance or lawyer assigned for her defense.

Police said she was from Seal Rock, south of Newport, but Andrew McCabe said they lived in Hood River. He said his brother had a business doing email campaigns until he became disabled.

Police are asking anyone who saw the woman and child on the bridge to call detectives.

The Yaquina Bay arched bridge, one of the most famous on the Oregon coast, opened in 1936. It’s listed on the National Register of Historic Places.

In 2009, a woman tossed her two young children off a bridge in Portland, killing her 4-year-old son. A daughter, then 7 years old, survived. Amanda Stott-Smith was sentenced in 2010 to at least 35 years in prison.