Board Thread:Legitimate Canon Questions/@comment-26742635-20150721085855/@comment-4091815-20150722192935

Again - we only have the one defining characteristic for "supernatural" presented on the show.

Her "immunity" to Peter's bite seems to go with the Season 3(b) concept that you can't be two things. She was already Banshee. He says he knew his bite wouldn't turn or kill her.

She could not be Banshee and Werewolf - this is observational canon meaning they've not stated it outright.

The kanima venom isn't a supernatural effect. It is simply a secretion that effects everyone equally and is also useful when collected and stored. Lydia ability to ingest it without feeling the effects is, as yet, unexplained on the show.