During NY Comic-Con, Julianne Moore was interviewed about the Carrie reboot.
The thing that interested me the most about her is … how tremendously isolated she was. She joined this religious sect and then found that they were not strict enough, they were not rigorous enough for her, so she ended up peeling off from them with this man that she met. They had their own church, they would preach to each other. They were so isolated from the community that when she was pregnant she didn’t know that she was pregnant – she thought she had cancer, and thought she was dying when she delivered the baby. At that point, her husband had died. So you think like, “Oh, my gosh, here’s this woman who has probably had like several psychotic breaks, who is completely socially isolated, who has no one – only had this man who then dies, and is just left with this child.” So you think, this is her only relationship, this is her only community. So I think starting there certainly helped me put into context what she was.
You can read the whole interview at Spinoff Online.