Well, they're all drama tweens.... ugggh
I have found that my tween responds better to "I know it's xyz (frustrating) when 123 (you feel like your dad is mad at you)"
sometimes a little validation is what they need - that it's ok and not scary to feel the way they feel.
Remember that everything is exaggerated for them. so when she expresses that her dad is mad and you (basically to her) come at her with the reason why her dad is mad - what it does is reinforce that her dad is, in fact, mad at her. Which is what is stressing her out.
So, validate that it must be frustrating to feel like dad is mad at you. You can also add in "it must be frustrating to have forgotten about the apple and peanut butter when you know it's important to your dad" or whatever.
See if dad can tell her he loves her more.
Remember that their brain has grown really rapidly for the past 10-13 years and right around 11 it gets wonky in terms of balance.
You almost have to parent the same as when she was 3 - not a toddler but really really really lacking the words and impulse control to articulate what she needs. Once I started looking at her like she was 3 again I had more patience!
hang in there!