I can only imagine the level of pain, confusion, desperation, vulnerability etc that would lead a woman who's had 2 abortions, inc a relatively late one to become a religious zealot, and so Anti abortion
She is probably struggling massively mentally.... she has found a crutch, possibly found something that she can get forgiveness through etc. This is possibly the only way she can exist, without losing her mind.
I know a lady like this, Dint know if she has ever terminations but she she an alcoholic who, like many female alcoholics, ended up being raped by a predatory man. She was raised in a very religious household, she has now returned to it, has married a Christian whose views are do extreme that other Christians on their church (described to me as a cult by a former member) find him extreme.
But she is stable. She is "happy".
Let her have the crutch she so obviously desperately needs, but if she won't stop preaching etc (likely) you are going to have to distance yourself.
Extreme religious views generally do not speak of a mentally well, stable person. That's what she is now, so you'll have to make your friendship decisions in line with that.