God never...
gives us anything we can't handle. Also, you have to realize that God wouldn't let this happen unless He wanted it to happen, not that He wanted it... like, no power is above Him, so if He seriously didn't want this to have happen, He could have stopped it. But there is a purpose in everything.
Paul once said, "For when I am weak, then I am strong." [2 Corinthians 12:10]
Just hang in there. You could take the easier way out, but for the sake of HER soul, help her see the light.