I’m a Catholic and the Catholic Church certainly has those who have gone crazy as well.... as to whether the Mormons are considered “Christian” by Catholics - I don’t know... perhaps it only matters if they are considered “Christian” by Christ.
The Pope and the Catholic Church does not accept Mormons as Christian.
As Catholics, we are allowed to judge institutions such as the Mormon faith. We are forbidden, however, from judging the eternal destination of individuals. There are no doubt many Mormons who are saved by Christ and who will be in Heaven with Him. The Mormon faith itself, however, is a non-Christian religion.
This thread is based upon a news story about Elizabeth Smart and the rapist who kidnapped her, not a story on the Mormon religion.