<human>: Can you give me the gist of the text in a nutshell?

It is the third night I have been living in my new apartment with my girlfriend. We live in a somewhat urban area of Los Angeles. I wake up this morning to a note on my door explaining how the lady downstairs can hear every move I make. She also notes that her bedroom is directly underneath my living room. Granted, two nights ago my girlfriend and I got home and we started to assemble our new dresser we had bought from Ikea. We both work normal hours 9-5 and me 9-6. So we started assembling around 7:30 and finished up near around 10:00. We had hammered the 10 nails it required at about 9:50 and heard a bang from the neighbor below. Now when we heard that we stopped to be courteous and finish the next day. This note says last ngiht was horrible. (NOTE: last night we went to sleep at 9:45 and didnt assemble anything) Granted i played a little music which was not loud and was off 15 minutes before 10) She goes on to say she could hear everything includuing the jump roping? lol wtf we dont have a jump rope. She says she works 14 hour days and all she wants to do is have a good night sleep in her expensive apartment. She then goes on saying she doesnt want to have a bad confrontation between us nor bring the police into this. LOL quiet hours are 10pm-8am. she then leaves her number and the hollywood police number. 

Now, I need a some advice on writing the response letter so I can post it on her door and see how she likes it. What points should I make? I also wan't to finish it off with the number for the FBI. Help me out reddit!
<bot>: Neighbor posted note on door after my 2nd day. Fabricating some stories. Threatens to bring police into it. Need help on response letter.