Your lawyer is incentivized to do what you describe but if they are a good lawyer the won't do that. They will show you possible options of going forward and put you in a decision to decide.

The tricky part is probably finding such a good lawyer and coming up with the money to pay them.

Edit: to add to you second point: If "legal" and "fair" are so different, that's exactly why you can't rely on your intuition but need to consult an expert.