(((Hugs))) to you, and your daughter.
Is it fair, no.
But, it is happening. Please try to just take each event, each day as it unravels. Thinking too far in the past, or projecting too far into the present clouds our thinking and keeps us stuck.
Also..for me, I try to think of five things every evening that I am grateful for. Sometimes these are wonderful things that have happened along my journey of recovery, sometimes they are very simple.
For instance, my children are healthy. I am healthy, I am alive today, I have a roof over my head, I have food to eat...sounds rather simple, but, I have to shift my thinking to keep myself from getting too resentful.
It is natural to feel anger, etc. as you go thru the grief process of losing "what was"...but, don't forget to focus on "what is still to come".