I'm so sorry for your loss of your sweet Maggie. She is beautiful. I have enjoyed the company of pets all of my life, and when they have to leave it doesn't ever, ever, get any easier. They leave their footprints on our hearts. And at some point, you will welcome the remembering because that is what keeps them nearby, even when they are not. There is no timeframe and it's all normal, everything you are feeling. Just go with it, and you do not have to explain it, to anyone.
Godspeed sweet Maggie