Oh, geez...
I believe I registered under the name Fire Trainer Bella. I was obsessed with the Redwall books at the time, and there was a badger named Bella in one of them.
I went through a number of name changes (how in the hell did we keep people straight back then?), most of which are long forgotten. Drusilla came along because someone in the TPM chat room thought I looked a little like Juliet Landau, who played Drusilla on the TV show Buffy the Vampire Slayer. Any resemblance is long gone, I think, but the name stuck.