Corrected entry: The whole reason for locking Susan up in the facility is to keep her a secret from the outside world. One tiny problem though: About a hundred people at her wedding saw her grow into a giantess. That's not something you forget very easily. Even later, when she visits Derek and her parents, they have little to no reaction to her changed self. Shouldn't the government have taken precautions to make sure they wouldn't blab?
BocaDavie
24th Jul 2010
Correction: This is a question, not a mistake. We don't see what containment measures the Government takes after removing Susan from the wedding; they may have sworn everyone to secrecy or face imprisonment. When Susan goes to visit Derek and her parents the people are the same ones who attended the wedding, they've already seen Susan's big change.
BocaDavie ★