*raises hand sheepishly*
I tried doing exactly that. Even included her name in my searches. The closest I got to an actual legitimate citation and not just blog discussions or news folks fighting about it was this
I’m not American so I don’t really have a dog in this race. But I can’t seem to find any other legitimate sources to this claim.
Here are the first four links I found. There are many more.
Robin DiAngelo Wants White Progressives to Look Inward
The author of “White Fragility” discusses her new book, “Nice Racism.”
www.newyorker.com
‘White Fragility’ Is Everywhere. But Does Antiracism Training Work? (Published 2020)
Robin DiAngelo’s best seller is giving white Americans a new way to talk about race. Do those conversations actually serve the cause of equality?
www.nytimes.com
'People Will Insist That They are Not Racist': Robin DiAngelo on 'White Fragility' and the Way Forward | KQED
Robin DiAngelo, the author of 'White Fragility,' has a message for white people in the Bay Area: "all white people are complicit with racism." Here, she says, is where to go from there.
www.kqed.org