Trying to remember this German movie I watched on a Lufthansa flight

So, kinda stupid, but I watched this super sad movie on a flight, and I can’t remember it…
German speaking, English sub, flight attendant marries a doctor, they have a daughter…
Mom has a stroke, daughter imagines talking to her mother in the loft, whilst the dad kinda goes crazy… anyone know this movie?

how long ago did you see it?