Congratulations on your new baby.
I agree with @Imbusytodaysorry your DH should stop dismissing your feelings when you try to discuss them.
"Dh says I'm being silly but I just can't face her at the moment... ...so I could see how ridiculous this is but I think I should feel comfortable instead of pressure."
Having read your posts, your feelings are neither silly nor ridiculous... and his suggestion that the whole of MN would agree with HIM that you are... is outrageous.
Your "judgemental" DM sounds like a bit of a bully.. and you are wringing your hands at the thought of getting another round of caustic comments from her. That's actually a real concern and not "silly" at all.
Why hasn't he got your back?
You're a mother yourself now. Don't go if you don't want to, but don't let it be because of your weight. You've just had a baby
I understand the conversations have gone.
you "Mum you are very judgemental."
DM "I suppose I am"
and it sounds like that response clinches it. Presumably because you are so upset by then, that all she needs to do is say yes I am. as in. You just have to accept it. But you don't!
She needs to take responsibility for these mean comments.
Ask her WHY .
What does she hope to achieve> ,
it makes you feel a, b, c and you seriously considered not seeing her - just to avoid a conversation like this.
And its great that she acknowledges she is judgemental,
but she is counter productive.
Why does she feel the need to deliver all these put downs?
And you would like it to stop. now.
If it doesn't stop, you won't be visiting anymore..
and that is HER choice. You can get up and leave if she starts on you again.
You've heard all the MN views so you get the gist.
Best of luck, what ever you decide to do.