Educating Grannie

So after last night's English lesson I didn't dare comment on her spelling of disturb!
She gave me a lesson on how to say eleven and even wrote down the way I was supposedly saying it. She was insisting my 'es' were 'is'. If you get me.
Then she added insult to injury by saying I couldn't even say croissant properly! I know I can't!! She just thinks she is smart because she can sing Frere Jacques 2 ways. In English and French.
I must remember she is only 6!