Beth Vanderwood  

, ベス・バンダーウッド

The name of the individual you're referring to is Beth Vanderwood (ベス・バンダーウッド Besu Bandāuddo). It appears that her abilities in magic are related to vegetables. While Droys practice a type of plant magic known as Holder-type, Beth employs a Caster-type form of vegetable magic.