I'm sorry to hear things are so complicated. For what it's worth, I'd suggest that within the framework of what it appropriate for you to say, consider being a gentle advocate for the baby. I know none of this is under your control, but if the pregnancy does result in a child, that child deserves the full loving support of both parents, in whatever form they decide is best.
I don't mean to minimize the stress for all of the adults, but at least they can voice their needs. I wish you all the best.