Financial Dependency
She and the kids were financially dependent on him. Sandie worked as a waitress, while Bertrand was an attorney. Sandie knew she would have a hard time granting her children a good and comfortable life if they could only rely on her salary.
Besides, she knew that Bertrand would use his legal knowledge and fight tooth and nail to avoid paying alimony and child support. It seemed like she was doomed to stay by his side.