Hi, thank you for your question. In relation to citing unreasonable behaviour in a divorce petition, this is a relatively straightforward fact to prove as all that needs to be demonstrated is that there has been issues of what the petitioner feels is unreasonable behaviour that has led to a breakdown of the marriage - and in cases where parties have not been separated for 2 years unreasonable behaviour is usually the only fact that can be relied on - and unfortunately there is nothing you can do to prevent her proceeding with a divorce under this.
In relation to finances and children issues that are likely to arise out of the divorce, the first thing is not to act too rash or quickly and there should be discussions between you, either directly, or through an independent mediator to address issues and attempt to reach a settlement.
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Do you accept that the marriage has irretrievably broken down?
Thanks for confirming. In that case you would be able to defend the divorce proceedings if you can demonstrate (by filing a statement) a response to her divorce petition and raise the issues of her depression and other matters you have raised above.
However, I would strongly inform you that the majority of defended divorces are not successful as it is usually the case that if the petitioner has taken the step to seek a divorce, a court will likely agree that a divorce should be granted, and defending it would only add to costs and stress between both of you.