At the time of her death she and her husband, James Gahagan (c1868-1930), were living in West Chicago, DuPage County, Illinois. No exact address is given. Her death certificate provides her birth date as April 13, 1869 and notes her occupation as housewife.
Cause of death is reported as chronic myocarditis with aortic regurgitation which she had over a period of two years. She also had chronic infection of the teeth for 2-3 years.
She is buried in Calvary Cemetery, Aurora, Kane County, Illinois.
From other documents I have found, there is no mention of James and Anna having children.
Source: Illinois death certificate #44515, Family History Library microfilm: #1504132, accessed January 13, 2015.