[lowfreq33]

Really this is an issue of perspective. Let's say that you work an overnight shift and sleep during the day. Would it be fair for you to complain about the noise her children make while playing in the daytime? From your perspective, of course it is, you work hard and need your sleep. What we're dealing with here is the supposition that the entire western world rises at 7 and goes to bed at 10. Which is clearly not true. I think you have an unreasonable neighbor on your hands, and the worst thing you can do is to acquiesce to her unreasonable level of sensitivity. If you're truly listening at a reasonable volume, the next time she complains you should tell her to call the cops and let them come out with a db meter. If it is too loud the worst thing that will happen the first time is they'll tell you to turn it down. At least at that point you'll have a reference as to what is a legal and reasonable volume. I live in an area where everyone has subs in their car, and their kids run down the street at all hours screaming obscenities. Fine with me, as long as they don't complain when I'm mixing at 2 in the morning at 95 db. The first time they complain about me you can bet there will be a call made about every late night party or subwoofer workout they ever have. The nice thing is there seems to be an unspoken understanding about this, and so far, no problems. It seems to me that as an owner you should have a bit more say than a renter, especially since she was aware beforehand that you might have a bit of music going on. It might be smoother for you to try and work things out one on one, but don't be afraid to resort to the authorities, especially if you know you're in the right.