Diana is mostly in favor of more straight-forward methods, but could be persuaded to go the sneaky route. She has a typical host of superpowers--flight, strength, etc-- but can also force people to tell the truth, which may help in locating the rescuees.

She is very good at talking people around and making them work together; if they have a plan she'll try to make sure everyone follows it to the end.

She'll also be adamant about not leaving anyone behind.

If they need more human-looking people to do recon, she'd be a good fit for that-- then perhaps Kurt and Naugus could do the actual work of the rescuing.