Tag Johanna,
Wie geht's? Bist du krank?
My mother taught (retired) German in my high school and I had 2 years of it. So we have that in common. Unfortunately, we also have cancer in the tongue in common too. Not a fun club but a surviable one (living proof here).
I can relate to your worries about being able to speak different languages. You see, my mother was also an award winning choir director at my high school, so of course I grew up singing. It was my natural born gift and was always easy for me. It was drilled into me to have good diction while singing. On top of that, my father was a Voice and Diction, plus Speech professor at the university in my home town. My biggest fear when I hear they were going to cut part of my tongue out was that I would loose the one true gift I had been given in my life. Well, 4 years out and I can sing but not 100% like I used to.
Bottom line, is you will adjust to life after treatment. Treatment is worth doing. I know that you are looking at an unclimable mountain of information right now, but take little steps and get the treatment started.
If you have any questions, let me know.
Take care and fight hard.
Tchuss
Jim