That is a lot of change for her to adjust to. Maybe the lemonade was just a symbol,
a lot got taken away from her, her dad, her mother has someone new, and her old home as well as the little family she grew up with. Was she an only child? Because that is even harder. Thirteenish when she had so much change to face including her becoming a young woman, wow that is a lot for her.

My daughter had friends that had parents that were divorcing, actually several friends. And sometimes they would come here and their overall feeling was, "They didn't love me enough to consider my feelings, no, I was not important". It isn't what you give her as accomodations now, she is confused and angry and feels betrayed and she is very angry inside.

You should try to locate a therapist that is good at dealing with this kind of situation.
Your daughter needs someone to talk to where she can get her feelings out and thats not going to be you, even it wasn't your fault. So that is what you need to do for her, do some research and find a therapist. Your daughter might not be receptive at first, so don't tell her visit with the therapist yourself first, without your daughter knowing. That way you can also see if the therapist would be a good match for your daughter personality wise.

No one likes forced life changes.

Open Eyes