Brina Cupcake and Red Baroness are two of the hardest workers on Sweet Apple Acres.  
Red is officially a more powerful horse than her father Macintosh and now does the majority of the heavy lifting on the farm. By her side is her little cousin Cupcake.  
Cup is training to be the new family matriarch and replace Applejack in a few years. Ever since her aunt’s health began to decline, Brina really stepped up to the plate and has even garnered quite a reputation around Ponyville. She travels from time to time, organizes family events and deals with sales and finances.  
She’s the second next generation of Apple [the other being Arkansas] to be sent on a mission by the Tree of Harmony.
 
No matter what these two do, they do it together. Cup and Red are an unstoppable duo