I knew this would happen, called it months ago in old thread.
I'm still convinced that if Faith does reunite with Ralph it'll only serve as a final disillusion. Problem is that she might need to experience it or she'll remain haunted by the "what ifs" and doubts because she doesn't have the evidence that it doesn't work. She could easily end up dragging a load of guilt for not giving it a shot. And she is no longer same person she was months ago, literally biology grabbed her, and she knows that now that the baby is born situation is different and expects (magical thinking) everything and everyone to be different in this new situation. So her old experience with Ralph doesn't apply, she needs new disappointment. I think getting with Ralph has a better chance of giving her a complete release from him than this breadcrumby bullshit between them.
She needs to wake up in the house with nothing to eat, with Ralph passed out drunk, stinking worse than her crying babies diapers. She needs to have an experience of being denied basic help, things most people don't even consider help just normal stuff, from Ralph because he's doing his 8 hour shift fighting the good fight and saving his family's face on twitter. She needs to be exposed to what he truly values to realize that there is no point of connection between them, not even the baby.
That being said I don't think this is what she should do. I think she should end all communication with Ralph permanently. But if they continue stringing each other along and dragging it on and on, gaslighting each other and manipulating, mudding the waters, her final and complete disillusion will not happen. Because there's so many "what ifs" that can be projected in chaos and confusion she'll always have a reason give him benefit of doubt.