I heard that the Park family MAY HAVE sold their house to pay for the medical bill and now lives with the korean grandparents. Based on korean new channels on youtube. Translate the subtitles and you get the english titles.
Anyway I agree I hope she get better. But we have to BE PREPARED for the day that THEY MAY leave the show. Maybe sooner than later. Especially since Anna have cancer. They may goes back to Switzerland. But then again they could sometimes film from Switzlerand. They did that before.