I know what you mean. I have, for the longest time, had a very angry streak. The least little thing will set me off. I thought that if I transitioned it would lessen, which it has. But I have been shown some things, thru dreams, that the real reason I get so hateful and angry, is that I feel cheated.
Cheated by not having a normal girl's childhood. I did not get to be that little girl rounding around, being a tomboy. Growing into a young tween learning how to be a teenager. Growing up as a young lady, chasing boys. Even that first love as a woman.
I was forced into something that others thought I was. Now I have to play catch up. And trying to survive without a job, does not really leave much to discover that young girl. The gods know I try. She alone is now in charge and that scares her too.
Maybe your grieving is directly tied to you losing out on the girl childhood.