JC,
I had a feeling this was going to be a hard week, but for different reasons. I thought it would be the wrench of moving out, and being in the new apartment. Sadly, it looks like your WW has spent the last couple of weeks circulating a narrative in which she is a heartbroken victim, and maybe even that you have been cruel and abusive to her. Many here feel angry about that, because they have your back. However, right now I believe that the absolute most important thing for you to invest your energy in is not correcting narratives, uncovering lies, setting records straight, or exacting vengeance.
The most important thing is YOU. Your well-being. The fact that an abusive person has subjected you to multiple shocks, and then tried to blacken your name, may well have left you with PTSD, though in this case you are barely even at the 'post' stage. So do not worry about spreading the truth to false friends, toxic in-laws, or the twins. That stuff, if it is even worth pursuing, can be done at a later date.
Right now, I suggest the following:
1) You contact your real friends and anyone else you can rely on for support. You tell them everything. Do not attempt to 'tough it out' by holding anything in.
2) You do the same with your managers at work. Tell them all of it, so they can understand the stress you are under.
3) You make an appointment with your doctor and tell them what you have gone through in the past five weeks, and any impacts it has had on your sleeping, eating, thought processes, etc.
4) If you find you are not eating much, or regularly, consider picking up diet supplements and nutrition bars, which can give you a lot of good stuff in a small portion.
5) Look for a counselor or therapist who has experience of PTSD, and start having some sessions to explain what you have ben through, and how it has brought back past issues for you.
6) Accept that nothing that happened to you in your youth, or this recent egregious abuse, was deserved, or your fault, or somehow triggered by you. Bad people chose to do bad things to you. And they hurt you. It was never your fault. Any more than it is someone's fault when they get hit by lightning twice, burgled several times, or whatever. We may run into a single bad person in our life, or we may encounter several. That is no-body's fault. You did not make it happen. You are not cursed. You have just been unlucky. A different woman would have cherished you and appreciated you. Different people in your youth would have protected you. What has been done to you is on them, not you.
If we had the power to teleport there to be with you, your apartment would be packed with people from here who care about you and hate what has been done to you. We will do whatever we can to support you. And that is why I repeat, your focus right now, and for the next few weeks and months, has to be YOU. If others want to believe crap about you, let them. Ten years from now, how much will any of them matter? YOU matter more than all of them put together. So focus on YOU, leave them wallowing in lies, and have as little as possible to do with any of them.
Our thoughts and best wishes are with you.