Don't worry though, by the time she's old enough to ask grandma, she'll probably be old enough to know not to. I'd worry just as much about finding her stealing your toys in a couple years.
lol... i hope not. I have though noticed that from about the age of 6 onward she has asked to be spanked a fair bit. Can you imagine my friends' reactions when my daughter walks into the room, sticks her butt out playfully and says "spank me daddy, spank me." I'm not making this up, either. Maybe it's a gene... I'm sure I'll never know.

Oh, and in response to the original post...no, my parents do not know. They just barely saw a nice bruise ONCE that I thought was covered and they acted like they were going to call the cops on my bf.
There is the advantage that a m/sub has... people are not as quick to look for signs of abuse. People just figure I bruise easily. I did have a hard time with gag-marks on my face once though.