The basics....God used to be a man, Jesus and Satan are brothers, they become gods with their own planets when they die. She didn't really know any of it, and that alone was enough to make up her mind.
Yes; that IS sufficient to call it NUTTY.
But ONLY compared to Christianity.
The MORMONs have made the claim that ONLY they are the 'true' Christians; based on a 'claim' that the BIBLE is somehoiw lacking.
They have NEVER shown any evidence that it IS lacking; other than to compare THEIR 'scriptures' to it.
In the real world that is known as circular logic.
"It's true 'cause we say it is" don't quite cut it.