hm... understood that, none of ppl will "wipe shit on their body"... 
just lodge any type of required reports...
later u inform (no warn her!!! ) old lady if ANY happened on your house, housemate, cars, ah dog, ah cat, etc...
she the 1st person will be suspect based on the previous record reports...

and dont mention police (KPN too?) fed up on her too...
later she report till N@jid, B@d@wi, M@h@thri no good for u lo...

hahaha...next times u should come pasar malam here. and park infront her gate. or try to remove her rubbish bin.
i think she not even stick the A4 paper on all your car window. i believe she will put back the bin at original places...means on top of your car. 

just try it if you dun believe!

i know now she also will stand at her window and look at me, every times i drive back and open the gate.
I just ignore her. If you start ask her why look on u...then she will start       
IGNORE her is my best solution at this moment.