It's ironic that you would mention a case from the Valley.
About 10 years ago there was a Witness mother in pretty much the same predicament. Her name was Michelle. I didn't really know her personally, but she attended my JW wife's congregation.
When she decided that she could not go on, she took her young daughter to the top of the Arizona Center, a Phoenix hi-rise office building and jumped off to the street below. She truly and honestly thought that she was leaving her troubles behind and jumping into the JW, "New System."
She did not want to leave her daughter behind without a mother, so she took the child with her, making it a murder/suicide. Again, her thought was that they would both be resurrected together.
From this perspective, it seems to me that JW beliefs can easily contribute to suicide rather than prevent it.