looks like , we got a potential replacement of Serena--
I really like her "Glare" in the pic ! It much better then her being shy in the trailer.
She work with regional prof for mysterious reason , hate making pokemon battle , read a lot book and play a Major role in Pokemon Sun & Moon series.
Imagine , Her traveling with Ash as a Tsundere who disliked Ash for his rush nature and making Pokemon battle ! But , Overtime she and Ash learn to understand each other and work together.
I guess , The main problem is that she not nearly as cute as May or any other former traveling companion.