Maybe she just wants to be as close to the humans as she can. I have one that I have to put up every night or she trys to sleep in the bush next to my bedroom window. She'll lay her head against the window and stare at me...kind of a creeper. ;)
She also trys to come in the house to lay eggs. She's laid them on our aussie a few times. He's 19 though and doesn't do much, I could see how he could be mistaken as a rather warm and fuzzy nest.