The Defense is really trying to stress (as they should be) the pieces that the State did not prove beyond a reasonable doubt. Some of those pieces so far -
The evidence doesn't show that his parents knew about this SpaceX job, and this isn't one of the lies that "matters" with regards to the charges. She is also focusing on how Chandler does lie, he has lied, many many times....but that lying itself is not the crime here, except for how it relates to two of the charges. She is trying to separate the concept of someone who lies so much from someone who commits murders.
They are also mentioning the possibility that his parents knew of his lies, that they didn't really believe the crazy stories for months, but they just kept going with it until one day when they were finally going to confront him. That they were going to still try to set him on the right path, and to support him. Defense is trying to explain how the State makes his parents finding out his lies as the motives for these crimes but that they did not present any evidence of what his parents were going to do with his lies. The State did not show anything saying his parents were going to kick him out, that they were going to cut him off financially, etc. Beyond the story of him being "grounded", the State did not present evidence to show that his parents finding out about his lies was when Chandler's world came crashing down - so the Defense says at least.