How about doing some journalling about it, or write her a letter that you can share with her on Monday? Sometimes we just need to let the feelings be what they are and give them the time and space to just exist for a bit. They have a tendency to normalize a bit so we can look at things with wider perspective.

Sometimes that panic of "I can't stand this! I have to do something about this! I have to stop this!" feeds on itself, when if we can just say "I'm feeling this. I may not like it, but it is just emotion. It won't kill me. I can accept that I may feel like this for awhile but it is bound to calm a bit on its own given some time to just be", we find in a few hours or so, we start to calm internally somewhat.

You are a bit in "fight" mode right now as a fear reaction. Rather than "fight" (doing something, anything, to get away from the feelings), can you just let it be what it is for a bit and see what happens?