Maybe talk to her face to face and be straight with her/him make sure that you are confident in your decision as horses are a lot different but I think that if you show that you are serious in your decision your coach will understand and see what you want
Be frank and to the point, after all you are the one paying her for the lessons, so it's only fair you get the horse you want!
Sorry I meant I still wanted to ride ponies!!😂
Just ask to start riding horses!Dont be shy the worst they can say is no! Say it is time for a change, and you would like to give it a shot! I asked onetime I rode horses for about a month and I still wanted to ride horses!