Hi subcami,
You don’t really say much about your friend except that she lives the lifestyle, found religion, and is depressed and confused.
I think you may find that your friend has quite possibly been depressed and confused for awhile now, and that is the reason why she has ‘recently found religion’ in an attempt to find either acceptance, legitimacy, guidance or a need to believe in ‘something’.
Just because she has found religion, doesn’t mean that I this is the reason why she is questioning herself or her lifestyle. I think she has started the questioning process long before. Maybe the reason she is depressed and confused, is why she sought out religion.
To my knowledge, the bible doesn’t advocate against having kinky sex, only same sex partners.
I have know several people who are Christians, and are into BDSM and are comfortable with it, but are mindful of who knows they are into BDSM, as the majority of people are regardless whether they ‘believe‘ in a greater being or not.
I think you need to urge your friend to seek professional advice and/or treatment. There may be a reason to her depression. It could either be a medical or psychological problem. It could be caused by an hormonal imbalance or by a bad life experience(s).
It is good that she has a friend like you to be concerned for her. Hope this helps you cami.