Hate to tell you this, but for the next few weeks/months you're going to suffer from what I can only call "ghost dog syndrome". You will see her out of the corner of your eye in all her favourite spots. When we lost Casey dog, I kept on seeing her lying at the top of the stairs, in the garden under Mrs R's Japanese maple (her favourite place to lie in the garden when it was sunny), in the sunny corner spot of the dining room. The only cure is a new dog when the time is right. (Make it a rescue dog too, as all of our dogs have been)
Our current incumbent is a Staffie cross of indeterminant age from our local rescue centre who loves people, grumbles at everything else, and instead of trying to steal pizza just sits in front of you and cries/whines/squeaks (tis embarassing really, but we love him to bits anyway)