I was on a hen weekend heavily pregnant. The bride asked me would I give her mum and aunts a lift home when we were goin home. This would be 40 mins out of my way on top of the two hour drive. I said no because the brides SIL who was also there with her car had been asked ages ago and agreed but she wasn't happy about doing it. I also did not want to be stuck in a car for two hours with people I didn't know very well. I wasn't rude I just explained I was not going straight home and wanted to do a few things on my way. I'm just wondering WIBU as the guilt is getting to me. I really feel the brides SIL should be the one driving her MIL home as she's family.