Complex sentence: After Bella is thought to be deceased, carlisle notices there's a slight pulse and tell's edward and the rest of the cullens as they clean the body, soon after her wounds suddenly heal as the venom spreads through her body.
Split into simpler sentences: After Bella is thought to be deceased, Carlisle notices there's a slight pulse and tells Edward and the rest of the Cullens as they clean the body. Soon after, her wounds suddenly heal as the venom spreads through her body.