I lost my native tongue, my mother married an American when I was 6, we left Denmark, he said we shouldn't speak Danish (he said so I would learn English quicke

I lost my native tongue, my mother married an American when I was 6, we left Denmark, he said we shouldn't speak Danish (he said so I would learn English quicker, she said because he was paranoid we were talking about him), when I moved back in my late 30s I had to relearn the language. I didn't do any better than others in my class, so I don't think I remembered any of it. I did actually remember a bit of German (we lived in Germany for 4 years and I had German in high school)