NurseBeeme....you bring up a very interesting idea..
that this might be connected to a friend (in need)
that reminds me of the Napa Valley Murders of 2 young women
turned out that it was the husband of one of the best friend of one of them!
http://www.cbsnews.com/stories/2005/09/30/earlyshow/main892457.shtml
and there was a similar "feeling" case in Florida..where a guy killed his wife's "strong"
and helpful best friend, an attorney
he apparently felt that the best friend was one of the reasons she was divorcing him
http://www1.wsvn.com/news/articles/local/MI80067/
so....any "estranged" husbands, boyfriends of a friend who might have a grudge?
also...a handyman....or a teen who helped her with the lawn/chores??
remember the case where the attorney's wife was killed by a neighbor teen out in California?? (the attorney was sometimes a commentator or expert on news/crime shows? I can't think of the name)