it occurred to me today ... they say when a 'bitch' is pregnant she will adopt a stuff animal to mother it/cuddle with it.  Grace is constantly at the fence leaning on it and very inammurred about something next door.  

I finally figured it out.

There's a cat on the other side of the fence, she wants to ... hug it?  anyways, it dawned on me today that's what she is doing, there's something over there, she doesn't bark at it, she just wants it.

so funny