It's really, really, really not. Not on £260k which is no longer considered an outrageous income.
£750k and up, more likely, but nothing like even, say, 10yrs ago.
£1m and over more likely.
Gone are the days of "but I sit at home to do school runs though" it's a harsh system now, OP will be told to get a job imminently. It's what nursery is for, and the other 2 are already in full time education/will be by the time the divorce goes through.
Married for 2yrs with £260k PAYE (so more like £150k take home) she's getting zero spousal. Frankly it's the child maintenance she's going to be living off. And that's going to disappear for child 1 in 12yrs, so she needs to be living sensibly and putting away any excess maintenance for her future/pension.
Modest house for £350k and good ole chunk of cold support. That's basically what's coming. If she's got any sense, cars and holidays for image will stop, not that she'll be getting enough to fund silly lavish ones though, and she'll put away the excess child support into a pension. If not, she'll have a pretty easy time for the next 10yrs then as the maintenance drops off child by child, not so much fun. Hopefully she'll utilise the free nursery places when her child hits 9mths and get a job to make her future much more stable. Three kids is a lot. Women are no longer seen as feckless little creatures sitting at home raising the prodigal ex husband's offspring and getting a hand out for their duty. They're her kids too. She chose to have 3. She's seen as equally culpable and responsible for providing for them.