Maths is a closed book mystery to Eileen, though she can do the everyday stuff and quite enjoys maths based puzzles (like maths wordsearches and kriss krosses using numbers). Jennifer prefers English though is better at Maths than her mother (much to Eileen's annoyance given she doesn't like being outdone at anything, even by her own kin).
Eileen hates these, considering them a licence for nosey parkers. She's been known to take the odd one out with her wand and adores the scene in the first Johnny English film where that amazing agent does unspeakable things to a camera. Jennifer's not keen on cameras either and dreads the thought of Eileen doing something remotely magical and the cameras detecting it. Eileen has pointed out this kind of thing would lack dignity on her part so how likely is it she'd behaved like that but Jenny remains to be convinced.