Instead, I think that she's been incorrectly told by a friend that she is eligible for alimony as long as they don't get married. That's the *old* law in my state... now it's basically co-habitation.
There's a vast gulf between "basically" cohabitation results in no alimony and "strictly" cohabitation results in no alimony. If it is "basically" you might have an uphill battle. I would be spending my time and energy on this, rather than some of the other stuff you're engaging in. What does your attorney say, and what is the case law precedent? As I have noted before, be aware of the things that he could do, like having a second residence where his bills are sent or he is registered to vote.
I don't know why, but threatening to cut a dog's throat just seems wrong... even though I guess I say equally awful stuff in jest at times.
Since you're not there, you don't know the context, and since you (and I, and many others) engage in similar language IN JEST, why are you spending your energy on this? I recognize the need to keep your children safe, but I think you're stirring the pot unnecessarily and spending emotional energy in areas where it may not yield anything for you. (NOTE: as a dog lover and a Chesapeake Bay Retriever fancier and owner, I hate hearing someone speak like this, jest or not).
She seems to think that he is safe, although she also seems to think that STBXW is a sweet, wonderful woman also.
So you engaged and potentially caused more contention for what, really? My point has always been that there are better, more reliable, third party ways to get this information. Your attorney could have called her as a witness or deposed her. You could have gone to the courthouse and examined the paperwork in detail. There would have been some sort of detail in the file as to why custody changed. Not all of this would have been available on line in some jurisdictions.
I would encourage you to pay more attention to your attorney (which is why you are paying her), to keep your girlfriend out of your business and to focus on the business details of this. From what you have found out, your children are safe, so there is no need to further engage or antagonize. Continuing to stir the pot is a sword that often cuts both ways.
If you're truly dealing with a narcissist, then you want to keep any engagement at a minimum. Time to practice the grey rock technique. You have a long summer and fall ahead of any sort of movement on your case. Amping things up will not only result in fallout for you, but for your children as well. I'm sure you don't want to put them in that sort of position and lose all the positive ground you have gained recently.
Cat