I do think this might be a little more common than you think, or at least it is in the U.S. If you can find somebody who specializes in trauma (and actually knows what they're doing!), they are likely to tick all of these boxes (I guess depending on how broad your definition of carer is.). Both of my therapists would fall into these categories, for example. But you still might have to interview a few before you click with somebody, and I know how draining that can be.