Catabay, 44, was Dr. Paul Jarrett's office manager and was convicted of sending her boyfriend and another man to his home to break in and steal a letter she had written in which she confesses to embezzlement.
The caper went bad, however, and the 82-year-old psychiatrist and his son, Gregg Jarrett, 47, were shot to death.
Catabay was acquitted of murder charges last month but was convicted of armed burglary.
The Miami Herald said Wednesday that Catabay could have received probation because she had no prior convictions. However, Miami-Dade Circuit Judge Stanford Blake said Dr. Jarrett had already given Catabay a second chance by not turning her in for the embezzlement.