So, what do people predict that Reika would do if she ever got 100 points? When I first thought about it, I immediately went with her choosing to get out of the game and have her memory wiped.
But then I thought, would she want to forget all about the man she's in love with? Kei could easily choose that option because his true love (Tae) has nothing to do with Gantz. So if she was alive, he could forget all about Gantz and enter a normal life with Tae.
Reika on the other hand, is only connected to Kei through Gantz. The whole reason she likes him is because of his performance on a Gantz mission. If she chooses to forget, she'd lose him completely. Granted, she now knows he loves someone else, so she'll probably choose the forget option anyway, but what if Kei decided to return Reika's feelings? What if they became a couple? Would that mean they'd never be able to leave Gantz because they'd lose their relationship with each other if they did? :P
Heh, that would be kinda funny in a screwed up way.