What's Heaven Like?

Since Nana died, I find myself thinking about heaven more than I ever have. I find myself thinking that all those sayings about someone to watch over you are just silly. I reason that Nana is much too busy being awed by the presence of God to even remember me, to even really think of anything except maybe that she (like everyone else) is unworthy to be in God's presence.

But, today, as I felt yet another pain in my heart at the loss of her I had another thought. God loves us so much more than we can fathom. I know how much I love Jack and I know how much it pains me to see him hurt. God loves me infinitely more than that so then is God pained by my sadness? And if God is saddened wouldn't all of heaven be shaken? Yet we are told there are no tears in heaven. Is that biblical or is it just a hymn? I couldn't find a New Testament reference to tears or crying in heaven on my YouVersion Bible. References anyone?
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