[stutnerman]

I don't really have any insight for you, but I do have a friend who lives above the coffee shop she owns. She says she can sense what is going on in other parts of the building. She and I think it's because she loves the building so much and has put so much hard work into fixing it up that she now has a connection with it somehow.

Maybe your grandmother was able to know/sense what you were doing because of the close connection you had with each other location-wise and relationship-wise. You know, that parent/child thing where your parents always knew when you were getting into trouble, lol. Or maybe your grandfather could have snuck around outside your house and then went and told your grandmother what you were doing without you having realized it.