I thought I would out this in here, as potentially it involves family law. I don't know that I would consider DH and BM (undiagnosed BPD) as co-parents, and I'm not even sure they are parallel parenting, because that would imply that both of them parent.

.
BM has invited DH to mediation yet again. This would be about the 5th time. There are current court orders, which they are not strictly following because she moved closer to us, so SS12 could go to school here and they now do 50/50. DH asked her back in October last year about doing up new orders but she ignored him. Even when he forwarded the email again, she ignored him. Now because of a hiccup at Easter, she wants to go to mediation to try to get consent orders (again). Part of the current orders state that both parents are to respond to emails within 3 days, something that she continually ignores. And yet demands that DH responds to her emails. This of course, is missing from her proposed new orders. As well as other stuff too.
DH sent her through his version, and she has completely rejected them, insisting that the new consent orders should be similar to the old ones, because she thinks that they work well. DH doesn’t think that they do. So DH sent her an email asking her if she will follow the orders, this is in response to her asking DH if he will follow the orders. This was her reply:
If we can reach an agreement and submit new consent orders, I will be following whatever agreement that is signed and dated. I have asked you to meet with me for a discussion at mediation to work on varying the orders by consent. Now given that she has consistently breached orders, and that she has previously gone back on her promises, DH is not inclined to believe that she will follow the orders as she says. Especially given that the last orders were by consent, and the judge gave her and her lawyer a dressing down for not responding to emails, and stated that he understood the father’s frustrations. This is something that BM has never acknowledged doing.
DH and SS have spoken about the orders, and DH has included things in there that SS wants. And these are not necessarily things that BM wants. While she says that SS should get some choice, she doesn't want him to get stuck in the middle making those choices. Our wording was along the lines of "having regard to the child's wishes". So DH's version of orders are reflective of what SS wants. And SS pretty much wants equal time with both parents, so we have factored that in. BM doesn't want to include make-up time. And BM has a history of asking DH to give up time for her various family member special occasions, without any offer of make-up time. We used to be long distance, and there was a history of her withholding SS as well. So this is why DH is being quite specific with his orders too.
I know that DH would like to send something back along the lines of asking her why should he believe her when she has failed to follow consent orders and court orders in the past. What would you do? I have an idea of what you might like to do, but what do you suggest we do? I know that many believe in BIFF for responses, but I don't know where we should start.