Before E was even offered the job that brought us to Berlin, my mom and I started daydreaming about it. 2018 had just begun and I was experiencing some new year’s melancholy, and my mom commented, “maybe next year we’ll spend Christmas in Berlin!” It was a nice daydream, and I told her not to jinx it. She didn’t. Obviously. But it still felt kind of amazing when the holidays rolled around and we were actually here in Berlin. My mom came to visit for three weeks — starting in mid-December and staying through the New Year. And my brother and his partner arrived two days after Christmas and stayed…