@Bigballer
I'm sick to death of people like the op who have no idea or understanding of other peoples circumstances. To loads of people saying yes is a lot simpler than saying no. Same goes to all the LTB, kick him out comments all easier said than done. Another few gems I have read recently is go sit by the fireplace, not everyone has a fucking fireplace. Or just take a day off work unpaid, some people cannot afford to take a day off unpaid. Many Mumsnet folk live very sheltered lives and are oblivious to the real world.
This ^
It illustrates that there are quite a number of over privileged yummy mummies on here. The 'just take in some ironing' brigade. And yes, the ones who say 'leave the bastard' as if it's just SOOOOO easy to pack up your life in 2 suitcases, grab your children and 'just move on...' These are the same ones who are screaming out for a lockdown because it doesn't affect them financially like it does many others... 
The ignorance and lack of education from some about how difficult (almost impossible) it is to JUST LEAVE is actually embarrassing.
Even when a woman is in her 50s or 60s and there are no children living at home, it is STILL hard to leave. Where the fuck are they meant to go? Go live with parents (most of whom will be dead or very infirm.) Go sleep on someone's couch? Book a Travelodge room? Life is bloody HARD for many single women. Not all of them are on £100K per year (as some claim on here...)
Sadly, despite what the over privileged on mumsnet think, many women are not in a position to leave. I get SO fucked off with the posts that say 'I left my husband when I was 48, retrained for a new career, and now have a wonderful little house that's all MINE, a bunch of new friends, and a wonderful new career. I have never BEEEEEEN so happy!

For the majority of women, this is not the reality at all.
The reality for most is that they'll be sitting in a damp and dingy bedsit, working in a low paid job where they have to fight for the hours to make ends meet, and will certainly not have a glittering new career, a bunch of new friends, and a lovely sparkly new house that's ALL THEIRS! 
And as many posters have said, many women simply CAN NOT just say NO to demanding extended family. The shitstorm that would follow would ruin the following year, as several extended family members (MILs, SILs, FILs etc,) would make them feel SO guilty that for them it's just easier to grin and bear it.
Makes me incredibly glad to have very little extended family tbh. Had all this shit when I was much younger (guilt trip after guilt trip from DM, GParents, aunts, and FIL/MIL,) and it wore me down.
We see what little extended family we have between 18th and 22nd December, and then see NO-ONE after that til the new year. Our adult DC are happy with that too. (We usually see them around 22nd December and swap gifts.) 
Unfortunately, THEIR partner's families are the type who insist on seeing them all over Christmas/Boxing Day, and insist they come around.
I have told them both to be more firm and assertive, but so far their partners are letting their extended family manipulate them and my DC are being dragged in.
I tell them to be stronger, but they aren't quite there yet.