“She’s very interested in it, been active on the board, very interested in growing the film economy here and a terrific advocate,” said Susan Brennan, who owns Second Line Stages. “She does her homework and is prepared and asks good questions.”

In court papers, Renee, Rita and Ryan have said they are close with the family patriarch and are victims of a “coup attempt” that has banished them from the teams, auto dealerships and other businesses that, until recently, they had helped run and stood to inherit.

Gayle Benson, who once ran a home-sales jewelry business and is twice married and divorced, has “increasingly isolated and alienated Mr. Benson from family, friends, business associates and employees,” according to their complaint. To prove that Mr. Benson is unfit, Renee, Rita and Ryan have said that Mr. Benson believed that Ronald Reagan was still president and that Mr. Benson subsists on a diet of candy, ice cream, soda and red wine. They are seeking to remove him as the trustee of a trust he established for them because he withdrew $24 million from a bank owned by the trust. Mr. Benson said he was angry that his daughter had gone behind his back and sought his personal financial information. In late December, he sent her and her children a letter stating that he never wanted to see them again, something the three say could have been written only under duress.

“Suddenly after I remarried you all became offensive and did not act in an appropriate manner and even had arguments among yourselves which created a very unpleasant family situation which I will not stand for,” Mr. Benson wrote.

In court papers, Mr. Benson said that his decision to give the teams to his wife, and not his daughter and her children, was not a result of a pique of anger, but of years of disappointment. He tried to groom them to take over the teams and his other businesses, but “unfortunately, the petitioners never rose to the task.”

In late December and January, the Saints fired Ms. LeBlanc, and her company car was taken away. Mr. Benson revoked Ms. LeBlanc’s lease in his office tower because she failed to pay the rent. The N.F.L. removed her from various owners’ committees.