My sympathies. A couple of thoughts. It won't help the noise from upstairs but it may make you less angry to realise that un-soundproofed floors make everything sound terrible and she may not be making the noises purposly to upset you. Firstly it is very hard for people to change the way they walk and if she has a heavy footfall she has a heavy footfall. I used to live below an enormous rugby player and his petite girlfriend, and it was her I could hear because of the way she walked which she could do nothing about. The smallest thing can be magnified-I once sat through an hour of a thudding on my ceiling and finally knocked on the door to ask them to stop-they were mystified and said they were doing nothing to make a noise. In fact they were ironing, using a wonky ironing board, and everytime it wobbled my ceiling thudded. The above may help your blood pressure but not the noise, which I know is somehow very intrusive when from above. Would it be at all worthwhile asking your landlord if they would consider soundproofing? It can be done from your flat and helps enormously/