Hi,
This page has a good overview of the process.
http://ballpython.ca/gallery/breeding/
I really wouldn't be messing with her with soaks or anything like that - just make sure the enclosure is set up right and keep track of her sheds. Have you seen where in her body the slugs/ eggs are?
Have you noticed any ovulations?
Letting her lay naturally is probably going to end up being the safest option by far.