FDU - I dont know, but Im not sure a letter will work so much while shes THIS angry. At the same time, I DO think an apology CAN be effective. But the key is timing. You want to do it at a time when she may be receptive to it. If shes in the middle of screaming at you, then it will fall on deaf ears. The other key is to MEAN EVERY SINGLE WORD of your apology - keep it short and simple and on topic on the couple of things that you feel are the most damaging to your R. Finally, make sure you do this for YOU. As a way of releasing your guilt. If you do it EXPECTING her heart t melt, you will only come away disappointed.
More than likely, it wont do much, but at least you plant a seed that you understand her and that you are "on her side".
