If she has spent all her time in a small cage, she might not have the muscle tone necessary to perform the blessed event. No, this doesn't require joining the nearest health club with a pool. If you have the space, a molded plastic kiddie pool or a vinyl-liner pool will work just fine. Fill the pool with enough warm water so that the snake is able to keep its head above water. Put the snake in the water for supervised exercise sessions, allowing it to swim for 15 or 20 minutes several times per week.
Green iguanas are another species that benefit from exercise.
Larger iguanas often spend their days lounging around like couch potatoes. While obesity is not a common problem in the iguana that is fed a proper diet, lack of muscle tone often is. Additionally, most people don't realize that iguanas are good swimmers, and would naturally spend some time swimming in rivers or ponds, given the opportunity. Most iguanas get almost all of their moisture from the foods they eat, since they often won't drink out of a bowl. So, allowing a green iguana to swim a few times per week is a great idea to ensure that it is well-hydrated and in good shape.