Originally Posted by
Ltlys 
Can anyone lend me any insight to this behavior? Is she just checking up on me and relaying stuff to him? Why does drinking seem to be a big joke to her? I would never do that to anyone I called my friend that was in my situation, EVER! What exactly are her motives? This is not a joke to me! This pretending that I was never in a relationship with her brother is mind blowing. Its as if she thinks he is cured now because he agreed to go to treatment. That what we went through and are currently going through is no big deal. Any thoughts? I could sure use a little insight on this! Thanks!
Here's my insight and humble opinion - your train has stopped at dysfunction junction. Find a new destination.
Hon, it doesn't matter why - what matters is it is happening and you don't like it. You have a choice. Either accept she is this way and is untrustworthy, or refuse to engage with her anymore.
You don't have to put up with this in your life, ya know.