"To John Grant and Mr. Howard Zeimer, I'm sorry I was such an inconvenience to them," said Cher Thompson, 29.
The con artist with a rap sheet stole $100,000 from her victims - and then skipped out of court once she was caught.
She first married Zeimer, who was left brain-damaged after a long-ago car accident, and then raided his bank accounts in 2008.
A year later, Thompson moved on to Grant. She cashed $60,000 in checks belonging to the 90-year-old dementia patient.
Manhattan Supreme Court Justice Charles Solomon issued orders of protection for the men.
The sly brunette, who will serve a minimum of 3-1/2 years in prison, skipped court appearances earlier this year.
In January, she fainted just before a court appearance.
Her $15,000 bail was revoked shortly afterward when she disappeared completely.
"She thinks she's going to jail," her then-lawyer Gene Conway said in January after unsuccessfully trying to find his client. "She's very upset about the whole thing."
Thompson pleaded guilty in November.