"Our Lady" of Medjugorje is not from God. I can say this definatively because she has advocated the false doctrine that all religions are equal.
When did she say this?
Wow, I have not heard that. Does this apparition still appear to these people? Like I stated earlier, I'm not a Catholic, but I heard a lot about this story when my friend made his pilgrimage.
Also, as a sidebar, is it true that Pope John Paul II stated that "good works" can get you into heaven? I heard this stated during his funeral hoopla (sorry, couldn't think of better term) and to me that goes contrary to what Jesus states in the Bible.