Seems quite prejudiced of her to simply look at her colleagues skin color and assume that she doesn't have much in common with them. Unless by "much" she means "her skin color", but that seems even more racist. I'll give the article the benefit of the doubt.

What makes you feel that she is making this judgement based on skin color? From my reading it sounds like she tried going to lunch with her coworkers and the conversations that naturally came up were not of interest to her.

Cry me a river. Honestly, you're not going to share interests with everyone.

I'm a white guy. If I go to lunch with a bunch of manager or sales guys, and they start talking about sports, I'm going to have exact same problem. I don't give two shits about sports, and I think spectator sports are incredibly stupid. So if I find myself in a group of sports fans, then I'm also going to feel that I don't have much in common with these people. Does that mean they're a bunch of racists? Obviously not; we simply don't share the same culture. If the conversation shifts to technology, or sci-fi, or Game of Thrones (a lot of people are into that these days), etc., then I'll be able to join in, but if the sports fans aren't into talking about that stuff over lunch, then I'm out of luck. I'm not going to whine much about it, except maybe for making some snide remarks about how stupid sports fans are, but I'm certainly not going to go on a crusade about it.

Luckily, I usually get along pretty well with coworkers this way, but I guess engineers tend not to be sports fanatics as much as the general population. But I certainly have found myself in situations with groups of people with very different interests than myself. I didn't make a big deal out of it; I know that my interests are a little more narrow and that I eschew many things that regular people like (sports, popular TV shows aside from GoT), so I try to find people I do share interests with.