I don't really know what processing the anger means.
I think that's something you need to figure out. Do you just need time to get over it? Do you need to express it and let it go? (Write a letter/burn it/bury a literal hatchet?) Again, IC may be able to help you explore the idea. FWIW, I think it goes back to the forgiveness idea--anger will pop up again and again, but it becomes easier to manage if you are consciously choosing to let it go. I think the same goes for the pain--embrace it, feel it, (but don't wallow in it for a long time) choose to let it go and move on...Hope that makes sense.
