May 21st pic and lesson with katherine

Tomorrow I am trailering Tex to te nearby arena for a lesson- a lesson for both of us. Katherine is a young, yet experienced, horse trainer, and also a friend. She said she will be starting us from the ground tomorrow, and will show me some exercises that will directly relate to in-the-saddle time. I didn't want to spend a lot of time on ground work because it seems like that was my only option with Tex for so long, due to him being little and then because I was prego with our precious little girl.
When someone "goes to a trainer," is it customary for the trainer to "train" both you and the horse, or just the horse? I really want both.
TM