She'll win...
That's because in divorcing circles the phrase fair means "The woman has a fair ly f*cking huge amount of money to live on."
My sister in law's a child abuser, and she mentally tortured my brother in law just to enjoy building him back up again. (sleep depravation, you name it.) On the first day I met her after she'd had her first child, she told me privately that she'd never loved my brother in law's first two children (whom she was de facto mother to.) She convinced them to stop visiting their real mother at weekends. When her step daughter turned up at my house aged fifteen, it transpired she'd not left her room for five years, because every time she did she was called a slut by my sister in law.
When the divorce was inevitable, my sister in law reversed the behaviour for a year, so my niece was on the side of the mother, and she rang up his other ex wife to complain that it was him, not her that didn't want contact.
She's got the house, and 60% of his income, essentially by crying in court.
Her sister's no better, she's planning to leave her husband when her kid's left school. She's been publicising her contribution (in reality all she does is spend the money,) to his multimillion pound business, and he's been humouring her with what he thinks are cost free comments. I can't wait to see his face when she pulls out all the articles from the glossies where he's said "I couldn't have done any of this without my wife. We're a team."
If I remotely liked the chap, I'd warn him, but I've decided to wait until the trial to tell him his sister in law told me when she was drunk, that his wife has been planning this for years. Hilarious.