Then it sounds like you might not need anything at all, to bring back their race, other than your power.

So stay true to yourself, and bring them back. But bring them back after you've stopped her. And in the meantime ... well, you're Roxy, aren't you? I know you can get out of something like this, even if it's tough as it is right now. If not alone, then with the people who'll support you like you always support them. Because it sounds like at least one of them has a chance to come and help-- and I bet he will, soon enough. The choices she gave you aren't the only ones, so show her that you can make your own while not giving up who you are and throw it back in her face eventually.