BANGOR – The Hampden mother charged with making bomb threats that shut down three schools for a day in March will share her Thanksgiving dinner with her fellow inmates at the Penobscot County Jail.

Jodi Lynn Holmes, 46, on Friday waived her right to a detention hearing in U.S. District Court and agreed to be detained in the county jail at federal expense until her case is resolved.

A federal grand jury has not indicted Holmes. She could waive indictment and enter a guilty plea this month. or she could wait until the grand jury hands up an indictment and enter a plea after that. The grand jury is not expected to convene again before December.

If convicted, Holmes faces up to 10 years in prison and a fine of up to $250,000 per count. She could be ordered to pay restitution to the schools to reimburse them for the cost of the shutdown. Administrators at Hampden Academy in May placed their costs at about $22,400.

Holmes, if found not guilty by reason of insanity, could be sent to a federal or in-state facility at federal expense until she is no longer a danger to herself or others.

On Nov. 9, Magistrate Judge Margaret Kravchuk found Holmes competent to participate in her own defense.

Kravchuk found Friday that no bail conditions would guarantee the community’s safety if Holmes were to be released pending the resolution of her case.

Holmes was arrested in May and charged in federal court with mailing bomb threats to Hampden Academy, John Bapst Memorial High School in Bangor, and Bangor Christian Schools prompting them to shut down on March 28, the day the bombs allegedly were set to go off. No bombs were found in searches of the schools.

Holmes allegedly told investigators she sent the letters during what was “a bad mental health week” and that her goal was to terrorize the recipients.

At the hearing last week, Holmes waived her right to a competency hearing after spending more than two months being evaluated over the summer at a federal mental health facility in Texas.

The psychiatric evaluation was ordered on May 24 at Holmes’ first court appearance because of her mental health history. The results were filed with the court last month but are not public.

Holmes allegedly mailed three nearly identical bomb threats to the schools on March 23. All three included the sentence, “The first bomb will go off at 1:45 p.m. on March 28th.” They were signed “Radar,” according to court documents.

Each letter said one section of each school would be safe. For Hampden Academy, it was the “portables”; for John Bapst, the auditorium; and for Bangor Christian, the gym.

“The week of March 23rd I was feeling angry feelings of terrorizing,” Holmes allegedly said in a written statement included in the affidavit filed in federal court. “Either bomb threats or threatening phone calls to hospitals or schools.”

Holmes wrote the letters while her husband and children were sleeping, according to court documents, and took precautions to keep from being detected. She allegedly wore latex gloves and sealed the envelopes with a wet cloth.