Why didn't Maude... ?
About half way through the plotline, and after capture:
Bargain with Mrs. Hucksby and Gentleman with her half of signing of the Will money?
Eg, the Hucksby's and Gentleman wanted the money, why didn't Maude make a deal - "I'll only sign if you get Sue out of the Madhouse"..
Although Maude was afraid, you'd think, given the time lapse between the initial conversation, and her birthday (signing), she would have thought of a way to rescue Sue, using the Will money as leverage.