Yes well... in the group Rena is probably the least sane. She's put herself in a safe fantasy world where she's a video game character afterall, and has the least largest grip on reality. So she is a nut, but she's been doing parkour most of her life and that makes her a strong asset for gathering supplies and finding unconvential means of escape. I imagine it may have saved some lives in the past.
Also I'm studying for midterms dears so i may be slow vuv