MIL's neigbours have extended their kitchen. Trouble is that one of the windows on the side overlooks MIL's patio. The window us very close to the boundary so not great for privacy however when plans were approved by the council the condition was that said window had to be frosted glass. Only when window was put in a few days ago "clear glass" was used instead. MIL very upset. I told her I would not do anything for now and wait for building control to sign off on the work, hopefully they will notice and tell them to change the glass. MIL is worried about her relationdhip with the neigbours but she does not want the clear glass overlooking her patio. Any advice? Thank you