How far is she from fry?

Without knowing when she was in contact with the male there is no way to predict that. How big she is doesnt help at all. If this is her first batch but she is having alot then she could still be early, if this is a second batch and she is due any day then she drop anytime. The only way to have accurate times give or take a few days is to know when she was in contact with a male.