1 Lori is a classic psychopathic narcissist. As such, she is ALWAYS going to be positive she must be right, she will always think the world revolves around her and her glory, and when she is caught doing wrong, she must by any means (try to) manage the world's perception so they can see her actions and her person have all been good.
2 The overwhelming self-focus obviously is a skewed sense of reality, but it's more a case of evil -- the idea that the world revolves around you is sin, as you essentially have made yourself "god" where everyone's purpose is to see you for how great you are.
3 In regards to her statement in court today, when you listen to it closely and boil it down, it said 2 things: (a) I have always done the right thing and been the perfect person, if you only knew, and (b) the people that are dead are all better off (!) as a result, so it's actually a favor to them that they were made dead.
Her attorney's desire that she should be able to counsel others, while he intended that to make her look better, when taken in conjunction with her own mindset and worldview, what a scary and abhorrent proposal!
4 Based on HER WORDS, no one needs to figure out if she's delusional, or faking, when it comes time to sentence her -- all that matters is to understand by her own words that she sees it as a good thing to kill innocent people AND she sees what she did (and does) as always justified. That means she is a danger to anyone and everyone she ever will encounter, because on a whim she could decide they (or you, or your loved ones) would be better off to be made dead.
The sentence for her to never be able to be free (x5) was appropriate, although these sort of crimes (hacking your own child to death, smothering another via duct tape to kill them, and aiding in the murder of a romantic rival who is in your way) are actually what the DP was made for. She has clearly forfeited her right to live. Too bad she can't be sent on to receive her fate that awaits later. There is no value in her still living here, where every day she might be able to spread her own evil thinking to others - or decide someone else is inconvenient and needs to be sent on ahead. That's who she is.
Just my 2c.