LOS ANGELES - A woman was arrested on suspicion of murder after the body of her 9-year-old daughter was found in a duffel bag along a suburban horse trail near Los Angeles, authorities said Monday.

Taquesta Graham, 28, is expected to be charged with murder on Wednesday, Los Angeles County sheriff’s officials said.

Prosecutors last week charged Graham’s boyfriend, Emiel Hunt, with murder in the killing of Trinity Love Jones.

The dead girl was found March 5 at the bottom of an embankment in the suburb of Hacienda Heights. She was wearing pants with a panda pattern and a pink shirt that said, “Future Princess Hero.”

There were no obvious signs of trauma on her body. Authorities have not revealed a cause of death or motive.

Graham was extradited from Texas to California last week and was initially held on an unrelated warrant. Graham was in custody Monday and could not be reached for comment.

Hunt, 38, has a previous child abuse conviction from 2005 in San Diego County, according to prosecutors. His arraignment is scheduled for April 16.

Friends and family members described Trinity as a joyful and talented girl who did well in school. A memorial near where her body was found featured stuffed animals, heart-shaped balloons, dozens of votive candles and notes expressing love for Trinity and one that said “Rest in heaven, Princess.”