[2][3] Her company, Meta-Software, which was behind the commercialization of SPICE, produced compound annual growth rate in excess of 25–30 percent every year for 18 years, and had eventually become part of Synopsys, which calls HSPICE "the 'gold standard' for accurate circuit simulation".

[3] In 1973, Hailey was part of the team who created Advanced Micro Devices' first microprocessor, the Am9080, by reverse-engineering Intel 8080, and in 1974, AMD's first nonvolatile memory, the 2702 2048-bit EPROM.

[3] Earlier, she, with others, built the launch sequencer for the Sprint Anti-Ballistic Missile System for Martin Marietta.

During her life she donated to the ACLU Foundation, Code Pink, the Drug Policy Alliance, Feeding America,[6] Rainforest Action Network, Law Enforcement Against Prohibition,[7] the Marijuana Policy Project, Erowid,[8] the Multidisciplinary Association for Psychedelic Studies (MAPS),[9] and served on the board of MAPS.

[11] In what its board considered a fitting tribute to Hailey, the Marijuana Policy Project dedicated a million dollars of her bequest to the initiative that for the first time enabled voters to legalize marijuana for recreational use in Colorado.