Long story so not to drip feed.
SIL 3 is a serial piss taker regarding her children and her expectance of everyone dropping everything for her. For the past month I have been planning a family day out to a significant place for DH's birthday, it can only be on this one day due to business closing for winter etc. He has no idea we are going, but all his sisters and his parents do. MIL will be driving me, DH, and DS's in her car, FIL unfortunately has to work (that's fine as he is main earner) SIL 1 lives at the other end of the country and her DH cannot get the time off, so they are sending a card and seeing us next time they can (we all understand, this is no issue.) SIL 2 has just started work in a new pub and with it being the local team's match day cannot get the full day off (again we fully understand). My DD's bio dad has also got plans booked with DD so we are celebrating beforehand with her as a family. Now here's the issue. SIL 3's Husband's nana has unfortunately passed away, and the funeral is on the same day as the day out. Baring in mind SIL 3 and H have very very little contact with his family and normally cannot stand to be at events SIL has now decided they simply must go to the funeral, but she will not take her children. She has found a babysitter for her youngest, but she will not look after the eldest as in her words he is a sod to look after. We have no space in the car, and in all honesty I'm a little annoyed that SIL 3 playing happy families with people she describes as 'hills have eyes wannabes' is at the moment coming before my DH's day. In this situation would you:
A) give up on the day out and just forget the whole thing
B) offer to pay for a childminder for Dnephew
C) tell SIL 3 to sort it fast
I know I'm being a bit bitchy but this is the woman who has constantly took MIL's time and attention away from her siblings, and frequently takes the piss out of the lot of them. Thanks in advance