Christians die every day. In accidents, of heart attacks or strokes, of cancer. Do you think that we Christians believe that God takes that away? We have to live in this world same as anyone else. If you do something dangerous, the consequences will be the same whether you are a believer or a nonbeliever.
And lastly, we are in the presence of God every day, not just during festivals and such.
but this wasn't everyday, this was a ceremony that was specifically designed to honor his glory and greatness. Symbolically it was the worst possible place (other than a church ) for that young girl to die. Theocratically speaking, it seems like a PR nightmare if you don't position it as "God's will".
Also, it wasn't any more dangerous than a carnival ride, skiing, surfing, rugby or other activities. It was much less dangerous than driving, tight rope walking and other activities. Furthermore, it is safe to assume that participant's in a church function preform things that scare them to specifically show their faith in God and his will to protect them. I can state with great confidence that most of the jumpers likely prayed to God before jumping. He answered all the others prayers by keeping them safe except for this one girl. Why? Was he pre-occupied and forgot to protect her? Was he incapable of stopping her from dying? Or was he summoning her?
If the Christian God exists and is everywhere as you just claimed, than only three explanations exist:
1) He doesn't care when/if his followers die even if they are in an event designed to glorify his name.]
2) He is incapable of intervening.
3) He purposely ended her life on earth for a divine reason.