Disclaimer: House is not mine.
Cameron had been raised Catholic.
Her parents, both devout Catholics, had made sure she never missed a week of Sunday School or a single sermon on sin and salvation. They even sent Cameron to Catholic school. The more fervent they were about church and God, the more violently Cameron pulled away from it.
Cameron was nineteen before she stopped going to church and twenty-two before she told her parents she no longer believed in God. She was bitter and angry with Him, and cursed others for being presumptuous enough to believe that some theoretically all-powerful being cared about their meaningless lives.
God hadn't saved her husband, therefore God either didn't exist or didn't care; the latter possibility was infinitely worse than the first, so Cameron solidly stuck with the primary belief.
Aside from doubting God's existence, Cameron had another reason for leaving her faith: she was not solely attracted to men.
Cameron had never told a soul about the hankerings she had, except Cuddy. She often thought about slipping her hand between Cuddy's legs and feeling the identical, smooth flesh; running her lips over the gentle curve of Cuddy's breast and enclosing her nipple in her mouth.
When Cameron lay with Cuddy as she would a man, the distance between their fluid bodies and Hell seemed infinitely huge.
Fin.