Hope you don't mind me replying here. I am a nurse (for background info). I have dealt with many grief related issues over the years. The stages of grief are very real. You should be aware that everyone grieves differently and does not naturally follow the stages in order. It can go back and forwards many times through the various stages until full acceptance is reached.
As a gg, you should know that women's emotions are always like this, and especially when our hormones are all over the place. For those of you taking hormones, you will find out what I mean. There are days when anger floods my body so quickly and completely, I feel I could kill the next person whom enters the room or says anything to me. The strange part is, you have the ability to recognize it, but still yell at someone anyways.
I wish you well with your transitions. I know that it won't be an easy journey for you, or your SO's, but we all deserve to live happy fulfilled lives, therefore you need to be authentic in yours.