Lots of mums work and their families manage childcare arrangements/costs. I think there is part of tax credit to help with that?
DH earns too much for that, I believe.
surly it was both of your decision to have the baby and for you to be a SAHM!
Yes, both kids mutually planned.
your contribution in this area needs to be seen as a certain amount of money saved on childcare.
That's the message I'll be making clear to MIL.
I don't think talking to MIL will work out well
Do you not think I should put forward my side of the story? Basically I'd like to present my case and then say, "if there there is going to be any more drama between you and I, I think we should go NC for the sake of the family". I should at least have to give her the opportunity to hear my view and to present hers before jumping straight to NC yeah?
Also, make a spreadsheet showing how much more you would need to earn to pay for full time childcare and what kind of hours you'd need to work to pay for it (I.e. Impossible high numbers) on top of existing bills. Figures talk very loudly in these circs.
Yes, good idea. I'll search for some local childminders and get some quotes.
The problem is, I don't know what my exact earnings would be. It would be entry level graduate at best. So, do you reckon that is about £20K?
Second of all, you are also working freelance, so they have even less right to suggest that you do not have a work ethic. Bloody cheek!
Not bringing in as much money as they hope, it would seem. btw they're not high fliers themselves 
I'd hide her posts or block her on Facebook.
Yeah, I did that. DH says it was 'petty.'