I won't let her know I saw her. She must be aware though. She did the same thing yesterday on her way to a meeting. Granted, it's the most direct route, but she could go around the building and it would only add about a minute to her walk...
Wait....what?
Your new place is on her way to work, and you think she should walk around it? Just to avoid the chance of running into you?
Just like you wandering around OW's office area, this doesnt make a ton of sense to me. What difference does it make how W walks to work?