Oh my....lies...a friend of mine is in exactly the same position as you find yourself now.
She has a friend who is actually being physically abused by her in-laws (cultural thing ?where they come and stay for months at a time and demand to be waited on hand and foot, demean, belittle and physically abuse her--but doesn't make it right).
Needless to say, she calls and cries to my friend about how awful it is, my friend listens, tries to offer suggestions, and this woman just won't do anything to change her situation. She definitely had to cut back on talking to this woman, because her own anger and frustration were stressing her out.
What a shame for you, your friend, and my friend and her friend....hopefully when they are ready for change, they will make it.
HG