Apologies, speakout, I thought we were discussing your Mum. You've made your own feelings clear. I was explaining the reference the Mormon church may be relying on to justify their stance re. familial salvation through the baptism of one believer.
Incidentally, I would agree with you that God is, at times, vengeful, wrathful, jealous, and angry. That is not incompatible with abounding love and never ending grace.
I disagree that he is misogynistic, hot headed, genocidal and a murderer, but sadly, His church have been in the past (cf The Crusades, for e.g.) and many, many people do things by their own design in His name that He would never condone.
I hope your Mum finds the peace that she is looking for. I don't think the Mormon Church will provide that, because I believe that Christ and Christ alone gives peace that transcends all understanding, but I don't doubt that she will find kindness there in individuals who mean well, and until she is ready to move on, perhaps that is what she will be happy with.