After such a devastating loss, I think it's completely normal to question if there was anything that could have stopped it from happening. It doesn't change what's happened, and I'm so sorry that you have so many unanswered questions. It makes it harder to accept.
I'm now 6 months in to life without my mum and it feels like it's hitting me harder now than a few months ago. The reality of her not being here is kicking in. I still can't get my head around it, even though I know she has died, it just doesn't feel right. I've also started to get intrusive thoughts recently about leaving my son without parents if something happened to me and my husband. I'm hoping that stops soon, but if anyone has any advice I'd appreciate it.