This intrepid trainer is basically spamming Volt Change. Considering you probably have and Emolga, Zebstrika, and/or the electric spider, that one move can make short work of her
Ah! Volt Switch? Hh-aah! Still using Volt Switch? Hggh! Aheh... Volt Switch... again!? Stop...
Volt Switch (English name) = Volt Change (Japanese name)