You know what to do...it is painful and awful and I am so sorry for all of your hurting, but you know what to do.
You feel sad...you grieve for this loss, because you have sustained a loss - and as you grieve, you trust in that unimaginable strength that you have, the strength that we have all seen. Let that strength sustain you as you feel all of your feelings. I have learned that the more we fight the feelings, the longer they haunt us. So, sit with that sadness so that it can pass.
Then you come out on the other side even stronger and more whole.