Hi Lan, Confronting her will leads to argumentes and shouting matches. I think we all make this mistake due to our emotional involvement. You do this and you've lost the battle right there. The OP is like an addictive drug.

So how to calmly set those boundaries? I'm reminded of how the cops do it in my part of the world. People break the speed limit a lot. But then one day they get caught. Lights flash, the siren goes on, they are pulled over. The officer smiles, says good morning, checks their background, writes up a hefty ticket, hands it to them with a smile and says 'have a nice day now'. They have the option of having the ticket on their driving record (insurance goes up) or going to traffic school and taking it off their record. Either way they have to pay the big fine. They can plead, deny and fight all they want but the boundary is set. Find a way to do something like this.

More later ...