Looks like the article is clear why her being Black is important. Here's an example:

Michele Goodwin, a law professor at the University of California, Irvine, and author of “Policing The Womb,” said those efforts have long overwhelmingly targeted Black and brown women.

Even before Roe was overturned, studies show that Black women who visited hospitals for prenatal care were 10 times more likely than white women to have child protective services and law enforcement called on them, even when their cases were similar, she said.

“Post-Dobbs, what we see is kind of a wild, wild West,” said Goodwin. “You see this kind of muscle-flexing by district attorneys and prosecutors wanting to show that they are going to be vigilant, they’re going to take down women who violate the ethos coming out of the state’s legislature.” She called Black women “canaries in the coal mine” for the “hyper-vigilant type of policing” women of all races might expect from the nation’s network of health-care providers, law enforcers and courts now that abortion isn’t federally protected.

Women of color are more likely to die during pregnancy, abortion is deeply rooted in racsim. ~~conservatives~~ racists want people of color to die and white women to make more white babies.

Intersectional theory is a thing, check it out

The article did mention that black mothers are much more likely to have CPS called on them when coming in for prenatal care and that legal matters around pregnancy "overwhelmingly target black and brown women". The article seems to support that notion. However, there are a lot of elements to this case that make it very unique, even without racial consideration.

No way this is an issue for a rich white lady. The police would bring her a trauma blanket and coffee to get over her ordeal. (But since she's black she must have done something to cause the miscarriage so she needs to be persecuted.) that's how are justice system works if you didn't know