Why would anyone ask somebody without children if they wanted children? How would they know if they were suffering from infertility? That IS an insensitive thing to ask someone. Anyone who asks that is an insensitive prick in my book.
However, maybe it's just the family dynamics that seem obvious here, with the Mother favouring the OP's sister constantly, as if the OP's sister is the wonder child, and the OP and her DC's are insignificant.
I can see how hurtful that would be, having NOT been the golden child.
I take far more issue with the OP's Mother than I do with the OP - it's blatantly obvious that she favours the OP's sister over the OP.
And how many of you that had IVF treatment had your Mum, rather than your partner, attend the appointments with you? Surely it is a private thing between a couple? I find the notion of the Mother attending the appointment very odd.
As I said earlier, none of my friends that have been through infertility and IVF had their Mother go with them. It was ALWAYS their partner.
Which is why I find it rather strange for the OP's Mother to have prioritised the OP's sister's appointment over giving the OP and her new baby some attention.
And given that, I would be hard pushed not to assume that the OP's baby will become the 'Golden GC' at the expense of the OP's DC's.
They should all be treated the same. And the OP isn't getting the support and care from her Mother that her sister is getting. And I WOULD be pretty pissed off with unequal treatment like that.
Yeah, my views may not be liked on this, I accept that, but I DO know that if I was the OP's Mother, it would have been the OP's new baby I would have been fussing over. I would have expected my other child's PARTNER to be with her for the IVF appointment.
But equally, if and when my other child had a baby, I would have been there with HER after the birth.
And I wouldn't have had ANY different reaction to either pregnancy or baby. I would keep quiet about it in front of the child going through the heartache of infertility, yes. But I wouldn't allow it to dominate my conversations when ALONE with my other, pregnant DC, like the OP's Mother did. When NOT in the presence of the other child, I would be just as excited about the baby.
And THAT'S why I would be fuming. Not at my sister, though I may feel that it could have waited a little while, I would be fuming at my Mother for not joining in the excitement of my pregnancy and newborn baby when my sister wasn't even present.
The OP's Mother is the one in the wrong here.
And the OP asked if SWBU to FEEL like this, not if SWBU to TELL her sister this. Massive difference IMO. And she ISN'T BU to FEEL like this.