No, Victor. When Never asks for something, such as, "May I please get a box of cereal?" then the family assumes it will be used for the purposes of casting some ritual, using the cereal.
Tell them cereal is not a component in black magic spells?
Too sweet from all the sugar! ;P
Seriously, the answer would still be the same.
"If I were using 'black magic' then I would not be *asking*."
Getting past the prejudices and preconceived notions held
by family members is going to be a difficult, time-consuming task.
Sometimes, you have to prepare yourself, test the winds, and fly your proverbial broomstick across wide gaps in the world. Sometimes you have to leave friends and family behind when you do so, trusting that you will one day see them again. This is the path you have chosen to walk (er... fly!) and you must hold to the courage of your convictions.
Also, get your own cereal, candles, etc. ;)