The truth is always a good defense. If you have copies of the email showing that there was no threat- that would be helpful. However, what your best defense is depends on what it is you are trying to fight for. If the dissolution involves minor children and you are seeking substantial time sharing or supervised time sharing with mother, you may want to request a psychological evaluation based on her prior mental health issues. If the issues are regarding distribution of assets- her mental health condition and her allegations of threats against you will not really be relevant.
Get the emails/texts and be ready to have the witnesses testify about what they heard (or did not hear) or receive in messages. If children are involved, I would strongly urge a more aggressive approach and perhaps evaluations for fitness by a psychologist. If you have not consulted counsel, you should consider it.
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