Life is already hard as it is for the many. It may be true; about all her stories, it may be fabricated (fake).
But, Why question integrity? Aren't we mature enough to differentiate the difference? Why call the bluff if it's real? What benefit do we get from it?
What happens here probably took whatever left in joy from a person that seeks a little attention or distraction from the miserable life he or she is already in.
Don't do that man.
I remember lying to my parents thinking I could get away from it and thought I was brilliant when they didn't call the bluff.
20 years later, now that I have my own children when they do the same to me, it recalls the day I did to my parents.
Should I call the bluff and scold them? Do I play the card that I used to be in their position so I know when a bluff is a bluff? (thief catching a thief?) Or, maybe I'm not seeing what their concern is about in why they lie in the first place.
So give them the benefit of the doubt. Cause a liar will always remember the lie to prevent being caught. One week later when everything is calm and relax, chat with them, tell them a story of how I used to do it when I was a kid. How I get away thinking I was smart, but actually not. Tell them why I think what happened last week doesn't click or logical but since explanation and justification may not command sufficient time, I let it pass.
Let them know that you noticed. Let them know you let it slipped. Let them know that they can trust you, even if it's a lie.
And you see how that relationship grows.
This may be real, maybe not. But it adds colours to our life. Regardless of how bad the script was.
We should always practice refrain and try to understand rather opening up threads to bash another like this.
Just a thought.
Live and let live.