A home health aide for the elderly Brooklyn couple targeted in a deadly home invasion last week was arrested Monday in connection with the heinous crime, police sources said.

Suzette Troutman, 46, allegedly hatched the plot that led to 91-year-old Waldiman Thompson dying before the eyes of his 100-year-old wife, Ethlin, while they were both hog-tied by robbers in their Bedford-Stuyvesant home Oct. 11, according to the sources.

The aide had told her alleged cohorts about the couple and where they kept their money — and even served as the getaway driver for her nephew Dwayne Blackwood, 27, and one other individual after they broke into the Thompsons’ home to rob them, according to the law enforcement sources.

Blackwood was arrested Friday and charged with murder, assault and robbery for the home invasion. A third suspect is still at large.

Troutman was taken from the 81st Precinct station house in Bedford-Stuyvesant on Monday after also being arrested on murder, assault and robbery charges, cops said.

She was arraigned late Monday at Brooklyn Criminal Court, where she was ordered held without bail.

Prosecutors say video evidence shows Troutman dropping Blackwood off at the home, and she had a 3-year-old child with her at the time. Her attorney, who said she denies the charges, said the child wasn’t hers.

“The defendant is the key to planning this home invasion,” prosecutors said at her court hearing. “She had the trust and knowledge.”

“She didn’t plan it. She didn’t assist it,” said her lawyer, Gregory Watts.

During the atrocious attack, the suspects allegedly targeted Ethlin Thompson first — creeping up behind her, throwing a blanket over her head and tying her up with a cord — before doing the same to her husband.

After they rummaged through the apartment, Ethlin somehow managed to free herself and alert authorities, but Waldiman was unable to do so.

He was discovered unresponsive inside the home and was rushed to the hospital, where he was pronounced dead.

It was determined days later that he had died of cardiac arrest during the ordeal.

Waldiman was remembered as a devout family man during a service at Hanson Place Seventh-Day Adventist Church in Fort Greene last week.

“You can hide from the police for a little while, but you can’t hide from God,” Pastor Bernard Penn said during the service.

Cops believe the third suspect helped Troutman and Blackwood.