My Kissa went through a false pregnancy with her second heat it went for the full term of a pregnancy THEN she had a squeaky she took everywhere with her for a couple of weeks after that all told I think we went through about 2 1/2 - 3 months or her "being pregnant and having a puppy". She would not be parted from the "puppy" either if we took the toy away from her to put it away with the other toys on the night she would cry until we gave it back to her. She would not leave the house or go anywhere without it. Good luck with your little girl.
Oh yea one more thing there was milk EVERYWHERE
she had left big wet patches all over the house until her teets dried up