No, it confirms that she's white. As white as every other white person in this country, and more white than some of us.
Having the same trace DNA elements as everyone else and absolutely no connection with the culture whatsoever does not qualify as "heritage".
"Trace" what is your definition of trace?
There is no qualifier for heritage,
Heritage - something transmitted by or acquired from a predecessor
It's in the report on her DNA test. You could have just read it, like I did, instead of driveling in here and expecting other posters to explain to you what you're talking about.
Most white people, particularly in the US, have tiny amounts of DNA from other racial/ethnic groups. And the reverse is usually true. It's not enough to be meaningful, ie. it's a trace amount of it (a very small quantity, especially one too small to be accurately measured.). In fact, most white people in the US have more Native American DNA than Elizabeth Warren does. It's certainly not enough for them to claim "Native American heritage"; and definitely not enough for anyone to run around identifying themselves as any sort of "minority". They're still white, and so is she.
DNA is not a "heritage". It's just biology. My DNA traces back primarily to Great Britain, but I don't have a British heritage. My family's been in this country for two centuries; I've never been to Great Britain, or even spent any particular time around British people. I don't know any more about them or their culture than any other American who reads a lot. MY heritage is American South, because THAT is the culture my family passed down to me.
Elizabeth Warren's heritage is apparently cultural appropriation, since her family appears to have passed down to her a tradition of claiming other people's culture in order to appear more interesting.