It's down+H in the air. There's a glitch where you can aerial exchange without her actually switching out.
Yeah pressing up or down exchange continues her combo, while left or right switches her out, so it's a pretty good tool to use.
@Hrm
its just an aerial exchange. the only reason it doesnt switch out character is because she touches the ground already thus giving her an advantage to continue her combos
I've been using She-Hulk for a while and I really don't understand the point of these fancy combos. The basic stuff that I learned from the Brady's guide on day 1 is just as effective damage-wise and have virtually no chance for error.
It's part of why I got bored with She-Hulk...