1. I have a character in her mid-fifties; she was born and raised in Germany until she, her husband, and her first child moved to Canada in the late eighties. Obviously she would still have a German accent and speak the language fluently, however she had a daughter after coming to Canada. Now this girl, who I'll call C, was raised in both English and German, but she's only had the ability to really use German in limited cases -- she usually speaks English. In the story she's now eighteen, so when she speaks German, would it have an accent? If her mother was to compare C's German with her own, would there be a noticeable difference in pronounciation and such?
1b. Since C's first language is English, would it be plausible to have some difficulty understanding her mother when her mother speaks German? I know this happened with a Korean girl I know, but I didn't know if she was the exception to any rule.
2. This might sound rather stupid but...C takes vocal lessons as well. Would it be plausible to have her instructor work at a school for music (ex: instrument lessons, vocal lessons, and such), that she would go to something like once or twice a week? Or would she go to her instructor's place, or would he come to her...? I've never taken vocal lessons, nor do I know of anyone who has, and so I was wondering if any of you could help. Thanks in advance.