actually you don't need deathproof at all. Just have some holy waters in case the zombified charcter's HP gets so low you need to heal him/her, other wise just let her zombify a few of your people in her (second?) form: these people will then be immune to her death attack in her third form. Switch everybody in for experience + maybe hit her with an overdrive or two and then start slamming overdrive aeons into her....