It’s a little trait I noticed Korra has exhibited several times. When she’s feeling vulnerable, she goes to sit somewhere, and pulls her knees (one or both) up to her chest, often while finding somewhere secluded. I’m pretty sure I missed one or two instances of it happening during the series (and I couldn’t quickly find an image when she was sitting on the cliff in When Extremes Meet without a logo, so..). It’s nice to see this particular habbit is portrayed consistently throughout the show. It makes her feel that little bit more real.