Enjoyable tale of a mummy's curse. I can't recall another such tale where the mummy was specifically female (though I haven't read widely in the subgenre). It's the sort of tale where you know doom is coming, you're just not sure of the exact form.

One detail annoyed me:

Spoiler

The scientists describe the poisonous plant as "stealing vitality". I would believe a hedgewitch or folklorist or occultist giving that description, but not a scientist.