I know that the moment your daughter was born , she was instantly your Princess and you promised yourself and her that you would protect her. The only thing you couldn't do was keep her here when her time here was up. You were spared at least needing to turn things off. Her death is a shock to her friends as well and many of them are probably taking a hard look at their lives and all the things they planned to get resolved later instead of now. The one blessing of the internet is that there are usually people around somewhere.
Remember that when you pray to God, you are also allowed to express how you feel. If King David could write psalms asking God why he was so far off, wasn't around when he needed God the most, and wept bitter tears over the loss of Absolem even though his son tried to seize the throne, you can tell God how much pain you and your wife are in and ask for strength. I know that my Grandpa spent a lot of time in his workshop after Daddy died so he could let go and cry. Of all the people I've lost, Grandpa was the one who helped me get over my fear of death right after he died. I was upstairs and was suddenly wrapped around in wave of love that was the way Grandpa felt to me. I got the call telling me he had died 150 miles away about 10 minutes later. Who we are, our personalities, and the love we feel for people--that doesn't stop when our bodies do.
Let your friends be there for you. I'm sure you've heard them say "Call us if we can do anything"; they'll be afraid that they'll catch you at a bad moment, or aren't sure what to say and feel awkward about it. Then they feel guilty for not doing something, feel more awkward as time goes by, and it gets strained for all of them. If all you do is meet for a cup of coffee, it allows them to be there for you and even share stories about your daughter. After all, I'm sure that many of them loved her as well.
All I can say is that the pain will go from being white-hot, down to searing, and not every-single-minute. Just dealing with the physical loss is bad enough. Or as a friend told my sister-in-law--"I'm just dead. I'm not gone.' Your daughter is in the one place she can never be hurt again. Every day of your life brings you closer to the time you and your wife will be with her forever.Thank God that you have each other to hold on to. If you need antidepressants, or to see a grief counselor, do it.
I saw a psychiatrist for several months trying to cope with being in physical pain from injuries not going away, and the fact the injuries that hurt physically had also made me miscarry my first pregnancy after being married for years. The first visit I basically just cried because I could finally cry without holding back. I knew how much it upset my husband and my Mother when I cried about it, so I tried to keep it in. When I said something on the 3rd visit about what a relief it was to not worry about anyone being upset about it, he told me it did bother him.
Anti-depressants at a time like this actually mean that you are strong enough to function a little. Stress--from physical and emotional pain and chronic pain--can actually alter the chemistry of your brain. I've seen the CAT scans of a normal person and a depressed person and was shocked to see how dramatic the difference is. Depression causes a chemical imbalance in the brain that can be helped--no one expects a diabetic to give up insulin.
My Grandma lived to be over 100. When I saw her at 99, she was very depressed and was losing weight she didn't have to spare. I'm not a doctor. I wasn't the first person to mention anti-depressants to her. Sshe had just lost a dear friend to a struggle with cancer.When Grandma said she couldn't understand how she could cope with things before and didn't know why she had so much trouble , I told her that she hadn't been in constant pain before. I had several family members tell me she wouldn't have made it to 100 without them. I was with her when she died. And I still cry because I still miss her.
the thing is we expect to lose our older relatives, but not our children. I got a gift from God and we had a son several years after I was told I might never be able to carry a child to term. (Another reason I was so depressed.)
Later on look for calls where no one is there, small items have been moved, or even hearing a song that she liked or that reminds you of times with her. I originally hadn't planned to go on line tonight. I knew I had a letter to a friend to finish on another server.Normally, I would have checked in on my group at Depression support, but decided to check all the support groups and saw a grief post. Put all of that together, and it feels to me that your daughter wanted to have someone hear you and help out.
You can send the love you've always had for her to her still. She'll know.