yeah, that's the real downside of parallel will, after a while they don't match the main identity. So, in time normal users gone mad (explained in novel)
That's why her heresy resistance increased when she got it.
It was pretty obvious this was going to happen. Once she realized that they were changing significantly from her and bore random and intense hostility toward the elves she should have immediately killed them when they were split into different bodies. Mind copies that don't serve the main mind are pointless and extremely dangerous.