The Idea of a mummy Cleopatra sounds so very pleasing, her body could be covered as much with bandages as the druid is with vines, revealing a bit of her rotten flesh and bones - I am weird, i know
The suggested Flame+2 trait seems legit and there could be some Anubis-like Gods and the already mentioned scarab swarm *-*...oh i'd love that! Her ability should not be yet another Pet, i think there are plenty of mages with a pet-ability. Maybe something like treebond but with a Sphinx/Pyramid-Gravespawnpoint, giving her regenerate or channeling.
A Fungus-Druid is also a neat idea lore wise, but as the existing Druid is also focussed around poison i guess it would be more of the same.