In 1992, Kristy was diagnosed with bipolar disorder, which prompted her quit the series she was on at the time, "Empty Nest," and to retire from acting. However, she returned for the show's series finale in 1995, making it her final screen appearance. She also has voiced animated characters on "Extreme Ghostbusters" and "Invasion America." Kristy teaches acting at a private school in Los Angeles. In January 2012, McNichol revealed to People magazine that she is a lesbian and that she's been living with her partner, Martie Allen, for the past two decades.