The mother of the 2-year-old girl whose body was found in a trash bag on Deer Island asked a judge on Tuesday to dismiss allegations that she helped her former boyfriend conceal the toddler’s 2015 murder.

Rachelle Bond’s lawyer also requested that her upcoming trial be moved to Berkshire County because of the intense media coverage the case has received in the Boston area.

Bond, 41, and Michael P. McCarthy, 36, are charged in the death of Bella Bond, who was known only as Baby Doe during a public campaign to identify her in the summer of 2015.

McCarthy is accused of first-degree murder, while Bond is charged with helping him dispose of Bella’s body. She is also charged with accepting more than $1,400 in welfare assistance for her daughter after her death.

Both have pleaded not guilty and will be tried separately. Bond intends to testify against McCarthy at his trial in April, said her lawyer, Janice Bassil.

During a hearing Tuesday in Suffolk Superior Court, Bassil said there’s no evidence that Bond helped McCarthy after Bella died in May 2015, and that Bond’s failure to notify police or medical personnel about her daughter’s death doesn’t meet the legal threshold for an accessory after the fact charge.

Bond lived in fear of McCarthy and didn’t willingly participate in the plot to dispose of the body, Bassil said.

“There’s nothing in the statement she gave, or in any of her actions, that indicates that she’s protecting him,’’ she said. “At best, she is trying to comply with him so she isn’t killed.’’

Bond, dressed in a black suit, didn’t speak publicly.

When she was arrested in 2015, she allegedly told police that on the night Bella died, McCarthy volunteered to put the girl to sleep. But Bond later found him standing over her daughter, whose face had turned swollen and gray.

She told investigators she saw McCarthy “either striking or applying pressure to Bella’s abdominal area,’’ authorities have said.

McCarthy allegedly stuffed the body into a garbage bag and put it in the refrigerator, where it remained for days. McCarthy and Bond then dumped it into the water in South Boston, prosecutors have said.

Suffolk Assistant District Attorney Amanda Teo said Bond had a duty to seek medical help for Bella. After the girl’s death, Bond subsidized McCarthy’s living expenses by letting him live in her apartment until they were arrested in September 2015, she said.

“It goes to show the success of her efforts that Mr. McCarthy was not known as the killer of Bella Bond until September,’’ Teo said.

Judge Christine Roach did not immediately rule on the motion.

She also took under advisement requests that Bond’s trial be moved to the Berkshires and that she be tried separately on the charges of accessory after the fact and larceny. Prosecutors opposed the requests.

Bassil said Bond’s trial should be moved because of negative news coverage that could sway potential jurors. She cited the Metro newspaper, which published a photograph of Bond under the headline “Monster.’’

Roach said the facts of the case are “sensationalistic in their very nature.’’

“Our first goal is a fair trial for both sides,’’ she said.

The case returns to court Jan. 26, and Bond’s trial is scheduled for Feb. 22.

Laura Crimaldi can be reached at laura.crimaldi@globe.com.