Otto, THAT'S A BIG STEP. Leaving a room when things get tough rather than saying something you will later regret. So thumbs up to you.
I have been hesitant to post anything because I do not want to give you an "answer" for the sake of answering and do not want to just offer my 2 cents worth on a VERY INTIMATE PERSONAL ISSUE that I know little about. I'm going to say something that will make MANY women's eyes and heads roll
BUT I DON'T CARE! God made MAN (MALE) to be head over woman. We women NEED our husbands headship! (another topic for another post, so ladies PLEASE DON'T START on me in this thread) I encourage you to heed to advice that has been giving by previous replies, focus on your relationship with Christ. You're about to be a DADDY! Regardless of what your wife chooses to do, that baby is going to NEED YOU (wife and mom speaking here). Because you can say all the good you want, but children truly DO LEARN BY EXAMPLE.
( *SIDENOTE*Pregnancy hormones (and all that goes with it after the birth.......) can really mess a woman up. And while that's happening to us, we often don't realize it, or we do but don't know how or where to get help. If she's already emotionally unstable, these hormones are not going to help.... I don't say this to scare you, but rather to let you know what your "in for", so it doesn't come as total shock and so that you may be prepared.)
You sound like you are making wise choices and seeking Christian help. Even she doesn't go, don't give up! If YOU need the support, go get it! There are A LOT of people here praying for you too! (There are good married men on this site, I pray they reach out be it here or privately) STAND FIRM! GROW WITH GOD! YOU ARE A GOOD MAN!
Prayers and Blessings!
GG