Oh, dude, Bonnie Holiday didn't die from anything. She's a fictional character. It's like asking what Batman had for breakfast. But if you mean Bonnie Holiday from real life, I have no idea. I don't keep tabs on people's causes of death. Like, that's some dark stuff to Google, man.
Bonnie HeavyRunner died in 1997.
Bonnie Consolo died on December 27, 2005.
Bonnie C. Templeton died in 2002.
Bonnie McCarroll died on 1929-09-29.
Bonnie Disick died on October 28, 2013, in Eastport, New York, USA.
Sie Holliday died in 2006.
William Holliday died in 1624.
Leonard Holliday died on 1612-01-09.
D. Van Holliday died in 2010.
David Holliday died on 1999-03-26.
Bug Holliday died on 1910-02-15.
Thomas Holliday died on 1969-07-19.
Elias S. Holliday died in 1936.
Cyrus K. Holliday died on 1900-03-29.
Thomas Holliday Hicks died on 1865-02-14.
Frederick W. M. Holliday died in 1899.
Fred Parkinson Holliday died on 1980-03-05.