My grandma had a black maid in the 50s in the south
And treated her well.
Not everyone in the south hated black people back then. The reality of the time was that black women were often grateful to work as maids and most of their employers treated them well.
My mom used to tell me stories about growing up as a child. Some were about the maid they had. Her name was Pearl. This was in Ft Lauderdale (when that area of Florida was still fairly southern). While that area wasn't the deep south back then, the color lines were somewhat drawn (even in the Florida beach town where I grew up, there was a colored beach up until the late 60s/early 70s), and black maids often worked in white houses.
I will say that one of the stories my mom told about Pearl were the few times she had to stay late at work for some reason, and my grandma had to drive her home because the bus didn't run late. On occasion, my mom would ride along and she said that the area of town where the blacks lived, she was appalled at the conditions (shacks, shanties....just poor overall). My mom grew up with money so she probably didn't see poverty much. They treated her pretty well, from what my mom said.
I am sure that there were some poorly treated black maids, but for those from outside the south, not all southerners treated/treat black people poorly.