I KNOW my family, and I KNOW her... You DON'T.
My decision was based on FACTS, you're were based on Fantasy and insecurity... I KNOW for a fact she won't give up, and even if you push her away and cut all communications. And connect again in 5 years... She WILL be back at it.
So it's YOUR shit, cause I KNEW what this would bring... So from there, HANDLE it from your own.
Let's say, it's the result and punishment of that manipulation shit ;)