...in front of her window? She has a one story house. Her side window faces my home. She is so nosey and always watching over here. I hate it. I live in the city. Her window is 4 feet from my property. I don't want anything too big, something that's kinda tall and skinny but will cover her first floor window. Any suggestions?

Get a Lombardy poplar. They grow fast and tall and skinny. I think they'd be perfect. This is what they look like: http://www.parkwoodpines.com.au/html/images/Lombardy-Poplar-Top.jpg