To think this is not an unreasonable request?

[Selfishsil]

I have NC as in have a feeling that SIL may actually be on here, although I hope she reads this!

SIL is 8 months pregnant, due to her age and health circumstances (high blood pressure) it has been decided to induce her early. SIL has private health care and got a choice of 2 dates, one of these dates being my mum's birthday and me and my brother have organised a party for her on that day.
So without consulting my brother she booked that day , I'm sure she did it out of spite because this is how she is. She makes it no secret her dislike for my brother's family.

Now my brother will not be able to attend my mum's birthday and this has been the first christmas and birthday without her husband and she has been finding it really hard and wanting family around her.

I'm really pissed off at my SIL and this is just one of many things she has done to upset my mum and I.

The thing is WIBU to tell my brother to come and see my mum for an hour on the day? SIL would obviously have to wait a while in hospital before she is induced and my brother could slip away then and quickly see my mum before coming back? I now my brother really wants to see mum on her birthday and is secretly a bit pissed off that SIL has done this.

Thank you if you got this far.

Redtoothbrush - if I have I dear stood correctly, the date of the hen night was changed to the night of the funeral to accommodate the SIL's best friend, who couldn't make the other date - so this could have been quite short notice.

OP - this will be a very stressful and worrying day for your sister -in-law, so I do think it would be u reasonable of your brother to leave her and go to visit his mum - but maybe she could go to the hospital to see them both, and he could then spring the surprise about the party and the guests she hasn't seen in years, and enjoy her surprise. Plus she could well get a new grandchild as a present, which would be pretty special, I think.