I had and have the same issue. My Cayuga duck laid and egg then didn't lay another for a few weeks. Same with one of my EE, she laid the tiniest blue egg and nothing since(a few weeks ago now) how ever to keep me occupied another chicken started laying, her first egg was good sized and she laid again today - However I can only guess it's my other EE since it is almost a white color & all my other chickens are suppose to lay light brown/brown eggs
I hope she gives you some more eggs soon!!