She sure was - and a lot more clear-headed than the last few times she spoke (understandably). She was counting her blessings, such as having a body to bury, and knowing in her heart that Ashton loved God and must be in the Best Place we can be. She was glad these guys screwed up and incriminated themselves.
It's still spooky to me how much she looks, talks and acts like Patsy Ramsey - except that she's hell-bent on avenging her daughter's death. Perhaps she is a Texas woman by raising.
Luckily, these maroons are 18 - I was afraid they were 16 like Ashton was and that can get tricky with the "minor" laws.