I get the impression JA has a very complicated relationship with her mom, to put it kindly. Really, I think she hates her mother. And that's probably because her mother kind of hates her.
I sense that mom is doing what she is "supposed" to do: sitting in court every day at her daughter's murder trial. And I'm sure on some level, she would like her daughter not to be put to death.
But I would think these two people "wore each other out" many years ago. We know how sick Jodi is -- according to her, sometimes getting up to four whippings per week via The Wooden Spoon. Later, she says she was knocked into furniture by dad, "finger-nailed" by mom, and beyond.
If a child/teen constantly brought out these violent tendencies in me, it would be logical to assume I don't like them. Maybe I'm supposed to "love" them so I'd try to act big, but I couldn't say I "liked" them.
Yet, the unknown quantity is this: What if JA's mom was the role model for her unhealthy expressions. It's plain to see that JA mimics people i.e., her female attorney, Travis's blogging content, Gus Searcy's style on the witness stand, etc. Well, guess who else she may have mimicked first and forever: mom.
IMO, there's a story behind Jodi's mom giggling & "Mona Lisa smiling" in the court gallery. It is evidence of something. I'm afraid to say what I think is going through this woman's mind... Here's a clue: What do you think was going through Jodi's head when she sat at Travis's memorial service?
The apple probably doesn't fall far from the tree.