Her death certificate indicates that she died of bronchial pneumonia, brought on by "Summer complaint" and infectious diarrhea. I had not heard of "Summer complaint", so I decided to look it up.
According to Dictionary.com, "Summer complaint" is
1. an acute condition of diarrhea, occurring during the hot summer months chiefly in infants and children, caused by bacterial contamination of food and associated with poor hygiene.
It looks like she died of food poisoning. She was the daughter of Robert Bourguignon Baca and Maria Teresa Torres.
sources:
"Socorro County Death Certificates, 1932 - 1935," database, Family Search
(www.familysearch.org: accessed 29 March 2016), death certificate: Lilly
Florence Baca, DOD August 30, 1930.
Definition: summer complaint, Dictionary.com, , accessed 29 March 2016.