They replied. Some bullshit about how they’ll always be there for the both of us. I thought, what? You’ve just spent the last year and a half trying to destroy our lives and yet you say you’re there for us? I didn’t respond.
It is good you didn’t reply. They likely would have twisted your words and used them against you. Sounds like one or both parents might have a narcissistic personality disorder and or the other is one and the other is an enabler. My mother is a clinical level narcissist — hence why I mention it. I see hints of it here and there when you mention the things she did or said and how she tried to dismantle your relationship, even after you got married. Going no contact with these people — for your own peace of mind — sounds like the healthiest thing you two could do, especially with a baby coming.