find a sister?
My sister was adopted years ago and is now 32 years old. I know the name of her new mother, so my sister has taken the surname of her adoptive mother. Is it worth searching on Facebook? Do you have a link on Facebook where I can post a wanted ad, or do you see any other possibility?
If you know the mother’s name, you can locate it via the local registration office (costs 7-10 euros).
Ask the Youth Office which made the adoption