Half of the money goes to Marjorie Messer's lawyer, the San Antonio Express-News reported. She agreed to drop any claims to Jewell Hall's assets or estate based on documents he signed after their marriage.
Messer, 58, faces a criminal charge of theft from an elderly person.
Hall hired Messer as his caretaker in February and she married him a month later. Adult Protective Services took over his care in April, and he was transferred to a nursing home.
Messer agreed to the settlement as the case was scheduled to go to trial.
She said after Tuesday's hearing that her only concern had been Hall's welfare.
"Just write something nice," she said. "I'm a good girl. I saved a man's life."