Just a thought, but if you want to explore the influence that black caregivers in the Jim Crow South had on a generation of white women, you should probably interview some white women who had black caregivers. If it helps, I can do a trial interview with you first so you can come up with questions and prompts.
Here's what I've found on the topic of black domestic workers in the South in that era as is pertains to race relations. I think they'll give you some really good ideas about how to approach this and the types of questions to ask.
Kousha, Mahnaz. “Race, Class, and Intimacy in Southern Households: Relationships between Black Domestic Workers and White Employers.” Neither Separate nor Equal: Women, Race, and Class in the South, edited by Barbara Ellen Smith, Temple University Press, 1999, pp. 77–90.
Excerpt from Publisher's Description of Book: "... Neither Separate Nor Equal analyzes the complex and dramatic developments in the lives of contemporary Southern women. Case studies vividly portray women's diverse circumstances activities: from rural African American women in the Mississippi Delta taking on new roles as community builders to female textile workers in North Carolina contending with automation and reorganization of the mills....
Rodems, Richard, and H. Luke Shaefer. “Left Out: Policy Diffusion and the Exclusion of Black Workers from Unemployment Insurance.” Social Science History, vol. 40, no. 3, 2016, pp. 385–404., doi:10.1017/ssh.2016.11.
Abstract: Social scientists and historians have identified the exclusion of agricultural workers and domestic servants from social insurance programs during the New Deal as a cause of the racially divided US welfare state. The most prominent explanation for these exclusions is that they originated in a Southern-dominated congress and were deliberately designed to exclude a majority of African-American workers from the emerging welfare state.... (I know this isn't exactly within the scope of what you're looking for. I just thought it was really interesting!)
Tucker, Susan. “A Complex Bond: Southern Black Domestic Workers and Their White Employers.” Frontiers: A Journal of Women Studies (Boulder), vol. 9, no. 3, 1987, pp. 6–13., doi:10.2307/3346254.
Asks the questions, "How do black female domestic workers and their white employers remember one another? And what do these memories tell us about past race relations among southern women?" (based on interviews of 100 black and white women conducted between 1979 and 1985)
Tucker, Susan. Telling Memories Among Southern Women: Domestic Workers and Their Employers in the Segregated South. Baton Rouge: Louisiana State Press, 1988.
Publisher's Description: In Telling Memories Among Southern Women, Susan Tucker presents a revealing collection of oral-history narratives that explore the complex, sometimes enigmatic bond between black female domestic workers and their white employers from the turn of the twentieth century to the civil rights revolution of the 1960s. Based on interviews with forty-two women of both races from the Deep South, these narratives express the full range of human emotions and successfully convey the ties that united—and the tensions and conflicts that separated—these two mutually dependent groups of women. (This is one of the books I recommended in email.)
Van Wormer, Katherine S, et al. The Maid Narratives : Black Domestic and White Families in the Jim Crow South. Baton Rouge : Louisiana State University Press, 2012.
From the Publisher: Shares the memories of black domestic workers and the white families they served, uncovering the often intimate relationships between maid and mistress. Based on interviews with over fifty people--both white and black--these stories deliver a personal and powerful message about resilience and resistance in the face of oppression in the Jim Crow South. (This is the other book I recommended in email.)
Yelling, Mary, and Susan Tucker. “Not Forgotten: Twenty-Five Years Out From Telling Memories: Conversations Between Mary Yelling and Susan Tucker.” Southern Cultures, vol. 20, no. 1, 2014, pp. 93–101.
Opening paragraph: For Telling Memories Among Southern Women, Mary Yelling interviewed about one-third of some 200 women who had the time and courage to talk to us about their memories of domestic workers and domestic work. As I said in the book, Mary's part was essential. As an African American woman, she was able to gain trust with current and former domestic workers in our racially divided society much more quickly than I, a white woman, could.