Jessica wisely dropped the topic.
No matter how terrible Chelsea was, she was still Hank’s sister.
Hank could not really cut ties with his sister.
In any case, Jessica made her stand. Her purpose was to let Hank and her get closer to Sonny, and to break down Liberty’s defenses. As time passed, Liberty would not object if they wanted to take Sonny out to play.
Then, she would be able to complete the task given to her by that unknown lady.
She was not being ruthless. Her family’s lives were o