My birthday this year falls on a weekday when MIL is due to come to our house to see DS and the DSC (don't live with us but are with us every other weekend and one afternoon/early evening each week). She comes roughly every other week on a Thursday for this purpose, but as she is on holiday, will not have been for a couple of weeks and so would be due to come on my birthday (she stays for around 4 hours, so basically most of the evening)
I work weekdays but would like to be able to come home and either have a nice meal in the house, or pop out for a meal with DH and children.
So ideally it would be better if MIL didn't come on my birthday. The reason I'm hesitating is that I generally find her a complete pain (won't go into it now but she is in passive agressive territory) and so I would be dreading my birthday instead of looking forward to it if she was in my house when I got home. I had thought of meeting a friend for dinner instead, but that way I wouldn't get to see DS and so don't want to do this
If MIL wasn't to come on my birthday, she could obviously come the following week when the DSC are there