Marlee Goes To Work On The Mini Farm

One day Grandma B decided that Marlee would like new boots to wear when
when they worked on the farm. Why did Grandma B and Marlee need boots?
Sometimes Grandma B's shoes would get all dirty when she and Marlee fed the
horses.

Sometimes Marlee's shoes would get all dirty when she and Grandma B fed the horses.

Grandma B got a new pair of boots too.
The mini horses are Lilly and Max. They know where to find their hay to eat.

How many horses are there? One, two horses.