I think you're a very dramatic person who worries too much about future events and focuses too much on being a victim. That's what I think.
If I was in my 20s, and some woman said she was my sister, I'd communicate with my mother. And my mother would explain why the situation is what it is. And I wouldn't be angry.
But you've intentionally burdened your young children with your past, without even knowing if a future like that would happen.
As I stated, I question if that is best for them.
I also gave you advice on handling the other situation. If you now have evidence that she's being "terrorized", then take action in court.
If I was in my 20s, and some woman said she was my sister, I'd communicate with my mother. And my mother would explain why the situation is what it is. And I wouldn't be angry.
But you've intentionally burdened your young children with your past, without even knowing if a future like that would happen.
As I stated, I question if that is best for them.
I also gave you advice on handling the other situation. If you now have evidence that she's being "terrorized", then take action in court.