In order to make it look like three clones are sitting on the couch in "Just Add Silvers", the crew had to use green screen, split screen, and computer visual effects. Also, Ellen had to remember what she had done as one of the clones in order not to repeat it.
Grandma Becky has a history of hiding things from Kelly. In season 1 she wanted to destroy the book so that Kelly wouldn't find out about magic. In the following season, she kept secret the true nature of how they spelled Chuck in the 1960s.
Ellen Karsten immediately hugged the writers of "Just Add Silvers" after reading the script for the first time at the table read. She was going to get to play four roles in the same episode.
From an early age Ms. Silvers was taught proper etiquette from her parents. Her mother was also a classically trained pianist who always reminded Gina that good posture is key for playing piano.
Jake is making Ms. Silvers eats pre-packaged food to ensure that no one could have possibly cooked anything and fed her. But we know that sometimes you don't have to eat anything to be spelled. Sometimes just touching food can cause magic to occur.