Christine.....I can't even imagine the magnitude of your pain.
I can relate to your feelings of not wanting to celebrate when you have lost someone you love. It is hard to act happy when you just don't feel it at all. Words of comfort just won't help, I know, but I wanted you to know that I feel for you.
Perhaps a medium could be of assistance to you, to make another connection with your daughter. It may bring some peace to your anguished soul. I do believe she is always there with you, in your heart and just beyond your vision. She knows how much you love her and love is eternal. She is close and will always be with you even if you can't see and touch her.