Annie died on 21 May 1942. One of her death notices in a local newspaper states her age as 73 years, and two different Geni contributors have her date of birth as either 28 Jan 1869 or 28 Jan 1870.
I have assessed 1868 to be more likely as she would have only been aged 71 at her death if she was born in 1870, or 72 if she was born in 1869.