Don't Ask Me Anything While I am Studying!

Actually don't even bother telling me anything because I guarantee you I will have no memory of the conversation whatsoever. My 12 year old takes advantage of it too. I'll finally close my book and then search the house for her. She won't be here. She's outside playing with the neighbor kids. I tell her to get in here, she needs to ask permission before she goes! Well she claims she did ask. She says I told her it was ok. Did I? I have no freaking clue! Yes it's bad but honestly when I am studying I do remember the kids or hubby in my hear saying something and I'll remember saying uh huh, uh huh uh huh....but do I have a clue what I just "uh huhed"? No. No idea whatsoever. So I ask.......when I am reading intently? Don't even bother! Haha