With respect, I have seen barristers take a pounding in court by self represented people.
I have also seen solicitors who are parties in matters, seek representation by a solicitor and barrister and get beaten.
Your offer is reasonable. I would strongly push for that offer, send it over to them again and have that annexed to the court papers so they know that she is being unreasonable.
Use that is leverage in court. Say 'she did not accept this offer, this is the only reason why we were in court today.' It puts the judge on notice and looks to the other side to settle. There are some lawyers who charge so much money to clients, her fees will be so significant, that the offer plus the fear of legal fees, she should settle.
You will be ok.
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