I couldn't find an obituary. Please let the webmaster know if you have one.
I do have this from the PGHSAA and ancestry.com
Dee Litch notes
PGHSAA Database notes
U.S. Public Records Index
Commencement Program
Sea Urchin Yearbooks
1965 L. Guyat, class of 1966, junior, photo
1965 L. Guyot, class of 1967, sophomore, photo
1964 Guyot, L, class of 1966, sophomore, no photo
1964 Guyot, L*, class of 1967, freshman, no photo
1963 Guyot, Lillian, class of 1966, freshman, photo
California Marriage Index
Lillian C Guyot Age: 35 Est. Birth: abt 1948 Spouse Name: Joseph Bohmarito Spouse Age: 38 Est. Spouse Birth: abt 1945 Date: 1 Apr 1983 Location: Monterey
Lillian C Guyot Age: 19 Est. Birth: abt 1948 Spouse Name: George F Blankenship Spouse Age: 21 Est. Spouse Birth: abt 1946 Date: 28 Oct 1967 Location: Monterey
California Death Index
BOMMARITO LILLIAM 1947 12 15 GUYOT FEMALE RE BUTTE 1995 07 09 Age: 47
Social Security Death Index
Lillian G. Bommarito xxx-xx-5710 LAST RESIDENCE:95926 Chico, Butte, California, USA BORN: 15 Dec 1947 DIED: 9 Jul 1995