When you first battle Dr. Sigmund in Lapis Ward she had a sprite of a Gothitelle, so adding to that Id say she might have a Grumpig, Bronzong/Metagross, Gallade/Medicham, Slowbro/Slowking, and a Sigilyph/Darmanitan (Zen mode). But either way she is going to be able to counter both dark and bug types.