Where did you find that? I haven't seen anything like that yet.
I only learned on Thursday, after talking to my aunt again, that Cassie and Annie were originally raised to beleive they were cousins--but in a fit of rage one day, while Cassie was visiting--Catherine told them that they were sisters. Annie and Cassie were never very close and Cassie had married and moved to California while my mom and her siblings were growing up in the Rhode Island.
After talking to my aunt I found a newspaper article that references Cassie and Catherine at the same event in 1928 (Cassie would have been about 18). My aunt indicated that Cassie stayed with Catherine when she was here so I have just started following that trail. I think Cassie might have been working in Providence in 1930 but that is only my very early research as of today ....