I was about to give her the benefit of the doubt, and argue that perhaps her costume required a black face but had nothing to do with an actual African American (a dead mime, a clumsy auto-mechanic, a coal miner after a long shift, etc.), but then the group outed themselves as the Little Rascals and...well...it would seem she did go full blackface. The photo that included her has since been removed from the team's blog, but it lives on below.
According to the Go Duke Blog:
Next up were the reigning champions: the juniors. We decided to get super original and bring back an old school classic: "The Little Rascals." Honestly, it could pass as being one of my favorite movies. I want Buckwheat to be my best friend. We had the whole crew walk into [Redacted] and performed a skit. I swear we all could have passed as little boys. We came in second place, which I guess I can live with ... If you haven't seen the movie, I highly recommend watching it otaaayyy!
[H/T Big Lead]