Context: three girls are told that they were summoned because the princess wished for someone to save the world, so if they save the world the wish will be fulfilled and they'll be able to return to their former world.
...nandaka shinjirarenai wa ･･・何だか信じられないわ
... [I] sort of can't believe [it].
kanzen ni rooru pureingu geemu
desu wa ne 完全にＲＰＧですわね
[It] is completely a role-playing game, isn't it?
