Finding a best friend who genuinely loves your kids, volunteers to babysit, makes legendary cinnamon rolls from scratch, and pays her own way on vacation is the kind of friendship that most people only see in movies. Some people are just built different, and Willow is clearly one of them.
Unfortunately, not everyone in the story saw it that way. Her in-laws took one look at a Black woman being helpful and kind and came to a very different conclusion about what her role was supposed to be. After some time, it was revealed that the situation was much, much darker than anyone had realized.
More info: Reddit