She is okay. Trust that. You nursed her for almost a year and that is a beautiful gift for your daughter - she is attached/bonded, and I'm sure doing well. She is not picking up on these things the same way adults do - "making it mean" something. Trust that what is good for the goose is good for the gander. She will thrive.
My daughter went through a lot from the time she was in utero til 8 months ago when her daddy picked up and left. She was deeply sad, but she has a close relationship with me now and I'm her "safe person" and her dad, who she is very attached to, she misses and loves being with - I don't know what that will mean for her growing up - but she has parents who love her and she is a happy funny little girl.
FOCUS ON YOU
The more you take the focus off you and put it on H or D, the longer I believe this will drag out. YOU have stuff to resolve.
Also, I would never tell a nursing mom to stop nursing - I nursed for two years and had to quit b/c my body couldn't take it much more.
BUT I will say - it contributed to 95% of my moods and emotions. The hormones are still there for me - and my PMS is god awful. Hormones are powerful chemical substances that can bring out the worst rages in women (estrogen). I know. I have friends like this.
Not saying your anger isn't real. It is, but it might be excerbated right now by nursing hormones - And not to say you should quit, but know this....