I have a sister who had two children C-section. Her doctor told her is she gets pregnant again she could very well die. She is Catholic but unfortunately she admitted that she is using contraception. She tries to justify it by saying that if she gets pregnant, she could die.
She was a Catechist at Church, a reader, and goes to weekly mass. I was disappointed in her because she always defends other Catholic teachings, but seems to take issue with that one because of her situation.
According to Humanae Vitae, it is never permissible to use contraception in the marital act. As far as I know, her excuse is not a justification, and would be a sin. Especially when she knows it is wrong, and does it anyhow.
Would NFP be even an option for her, or should she just remain celibate?