The short answer is yes, or at least I have, although it took a while with it all going over and over in my mind.
I posted on your other thread - I had a placental abruption at 36wks with my 4th child. So much of what you said in your post is familiar. Again - I'll share what happened in case it helps. It might; I found reading other people's accounts of placental abruption helped, and the reactions of several health professionals afterwards really made it sink in for me that placental abruption is one of those thoroughly shit things that just comes out of nowhere and usually isn't possible to predict.
The abruption happened around midnight - the previous day or 2 I'd wondered about movements, but whenever I got chance to take it easy & lie down (not often, the dcs were off school & dh had a nasty tummy bug so I was busy), drink something cold etc he'd start moving again. That evening I felt uncomfortable - not painful, just uncomfy. I had a few strong braxtons & had a shower as I figured they'd either stop or carry on. I'd always had strong braxtons in previous pgs several times before actually going into labour. I didn't have any more & fell asleep. Shortly afterwards I woke up, thinking my waters had gone. It wasn't my waters, it was blood, which I covered the stairs with when going down to get dh before I realised. Dh called an ambulance, but there was no hb when we got to hospital.
When we met with the consultant for the results of the pm, there were a lot of details about the condition of the placenta, which showed the blood supply had been failing for about 6 hours prior to the abruption, but the abruption itself was a sudden event which was what caused our son's death.
I couldn't help asking, yet again - if I'd gone in when I was wondering about movements - would he be alive? If I'd gone in when I was having bh would he be alive? The honest answer is that no one knows, placental abruption is notorious for being difficult to predict. Even ultrasounds at the time aren't very reliable at showing up what's happening. For things to be enough of a problem that they can pick it up, it tends to mean its already a major problem with the placenta.
One thing that struck me from your post,is that you did go in in time. You were checked out. And the people who know about these things far better than you or I do, didn't realise there was a problem either until it was too late. Unfortunately, that's so often the case with placental abruption. If you'd gone in even earlier (& you managed it much sooner than me - I bet you don't think I should've done more,I bet you only blame yourself - which is the natural effect of your grief) why would they have seen that there was a problem? It didn't appear urgent at 7.30.
I wonder whether you'll find out something similar to us in fact i.e. that what was happening during the day was a slightly failing blood supply, but then a clot causing a portion (or all of) the placenta to peel away (abrupt) suddenly just as the dr was scanning.
I found talking it all over with the bereavement mw very helpful - do you have that option? I also found the meeting with the consultant helpful as it did tell us what happened, although not why. Hearing other stories of abruption & how sudden they are helped - there are loads of posts all over the Internet. I realised I didn't blame any of them for not realising/doing something sooner, but judged myself more harshly. With time I realised that its such a normal reaction when people die - what if - if only - in hindsight. But we didn't have hindsight at the time. Forgive yourself - its not your fault. You made the best decisions you could at the time. Unfortunately, placental abruptions happen just like this, it's shit. But it's not your fault.
I hope that's some help - feel free to pm if you like, or keep posting. I think working it through & going over it with other people (rather than alone) are a big part of dealing with it all.