It's been mentioned briefly upthread, but I just wanted to highlight Pro Senectute. Their advisor has been helping my friend navigate this difficult time; I've sat in on some of these meetings, I am impressed at not only their knowledge but also their kindness to the family.

She has been dealing with Pro Senectute Ausserschwyz, but there are groups in all cantons/regions.

If you find yourself confused as to how to navigate options in dealing with aging issues, do take advantage of the knowledge that Pro Senectute can offer.

https://www.prosenectute.ch/de/ratgeber.html