The more she talks, the more her explanation sounds a lot like word salad to Tim's ears, but Elizabeth seems to be fighting the monsters and not harming anyone else, so that's good enough. The energy blast is a little startling, but it's damn effective; once the dust settles a little, Tim makes his way back toward her, scanning the arena for additional threats. Are any skeletons still up and at 'em?

"You sign a contract for power like that?" That's. Not the usual way for the metahumans Tim's used to dealing with, but hey, they're clearly not in Gotham anymore.