Agosti grew up in Toledo, Ohio and attended Central Catholic High School.
[1] Agosti served less than one year as a deputy public defender in Montgomery County, Ohio before moving to Nevada.
In 1984, she was elected to the Second Judicial District Court in Washoe County and re-elected twice without opposition.
[2] Near the end of her term, Agosti was criticized for writing an opinion that temporarily let the Nevada Legislature approve tax hikes without the mandatory two-thirds' supermajority.
[3] Agosti cited health reasons for choosing not to run for re-election in 2004, although her announcement came two weeks after her retention score had dropped to 44 percent.