the secret to a "bpd relationship" is a non judgmental environment, albeit one where strong boundaries are practiced. that is where the partner with bpd traits thrives.
Idk what you said but I know that there’s times I feel like you’re going to abandon me and now my child is feeling the same. These things are damaging and hurtful to me as an adult I can only imagine what a child would feel with these threats please do not make my child ever feel like they may be abandoned. Told her That she’s basically engaging in psychological and emotional manipulation and it’s going to effect our child negatively.
this is a pretty confrontational, and judgmental approach, one that, if you look at it carefully, pits you and the child against your wife.
if you didnt know what she said, why not ask, and listen?
So of course I tell her let me know what I can do and she says she’s unwilling to tell me. So I ignore her as she’s obviously not going to make this easy. I already know I’m in the can’t win dilemma. Then she asks what’s wrong cause I decided to stay away. so I told her well you have a problem you make it known, tell me it can be fixed and you have the ability to fix it but you refuse to fix it I’m a little frustrated. So I tell her she can let me know how to fix things since she holds the keys to fixing it. So she engages in her passive aggressive behaviors. After time has passed I ask again are you ready to talk about our issues. And she sits there silent completely silent.
ignoring someone is a passive aggressive behavior, Ltahoe

have you considered why she was unwilling to tell you? is there a lack of trust? is there fear? is there an attitude that you wont listen, or that it will do no good? is there an attitude that your response will be to ignore her?
i dont mean to put this all on you. it sounds like there is really no trust between the two of you, you both expect the other to read your mind, and feel resentful when it doesnt happen, and you each emotionally distance as a result.
its killing your marriage, man.
do you want to get this on a healthier trajectory?