Did the DC Madam, Deborah Jean Palfrey, Kill Herself?

I can't understand why it's not worth a second look, as high profile as it was, whether Deborah Jean Palfrey may have been murdered by professionals. The reports that she was making arrangements to pay her bills during her jail term don't indicate suicide. Suicide isn't in the nature of people like her or Heidi Fleiss. They're tough women in a tough business and will do their time if they have to. The sudden "suicide" and subsequent silence from anyone who should be an interested party doesn't strike anyone as strange? Strange similarities to the Vince Foster death. I know, but there were valid questions unanswered in that case.