i'm not sure this is possible (can't check, on a pc at work). but even if it was, it may not give you the most accurate info. say you load up a page and then run off to play with the kid, come back while the kid is in the bathroom (no idea how old so the child is so bear with me), load another page, run off.. etc.
it's just tough to tell. i suppose if they loaded tons of webpages page after page for a few hours, then it would prove your point though... hmm
i'd suggest if you are worried though, to talk to them about it...?