Jan -

As someone who endured apartment life (and MANY noisy, inconsiderate neighbors) for over 10 years, please save yourself some sanity & force the issue w/the apartment manager. They get PAID to ensure the peace and harmony of the tenants. It's their JOB to make sure no tenant is harassing another with their noise/abuse. You have given this woman far more credit than I would have... many folks just don't/can't change.

If the apt manager is too mealy-mouthed or lazy to do his/her job, please consider contacting the police if nothing is done. You can check locally for the municipal code on noise & find out what time people need to keep it down (usually 10pm during the week & 11pm on Fri/Sat). You can usually tip off the cops anonymously (i.e. they won't tell the offender who called to avoid retaliation).

I wish I had done so... Instead, I let the frustration build until I dropped a bowling ball through the floor & kicked in someone's door to let them know I mean business about being quiet at night.

At any rate, I wish you the very BEST of luck w/this...