Gnumed for Speech Therapists

Hi,

my mother is a speech therapist. She is managing her patients currently 
using Thera-Pi, which includes billing to the german public health 
insurances.

Since Thera-Pi only runs under Windows, i installed it on a virtual 
mashine, which in turn causes some annoyances. I want to try GNUmed 
(currently i failed to get it to run under debian arm64, not sure why 
that is..). Until i manage to set up a debian x86_64 for testing it, 
could someone tell me:

Is it feasable for a non technical person like my mother to use GNUmed?

Can GNUmed create encrypted bills (via the german trust-center)?

Is GNUmed suitable for speech therapists?

Also: I noticed the wiki is not working fully right now. What is the 
issue there?


Thank you so much.

Jonas Damm