This profile on Wendy Hutchens' website says that JMK's mother died in 1978, when he was 14 and she was 40.
There is a lot of delusional stuff in there, so that may not be true (it'll turn your stomach) - but if the date is correct, anyway, then she didn't show up in the SSDI at all. That last one I found wouldn't be right. Sorry!
Transcripts - Thu., 8/24/06 - CNN
Paula Zahn
http://transcripts.cnn.com/TRANSCRIPTS/0608/24/pzn.02.html
Nancy Grace
http://transcripts.cnn.com/TRANSCRIPTS/0608/24/ng.01.html
Larry King Live
http://transcripts.cnn.com/TRANSCRIPTS/0608/24/lkl.01.html
-------
Transcripts - Wed., 8/23/06 - CNN
Nancy Grace
http://transcripts.cnn.com/TRANSCRIPTS/0608/23/ng.01.html
RE: Karr Profile
you figured out that you have to click on the picture to get to the next page of it, right? There are about 6 pages total.