my MIL is annoying the crap out of me.

So my husband & I are driving over 16 hours to go back to our home town for a visit. His leave doesn't start till Friday, so we won't be leaving till that morning. We are also pulling a jetski with us so we assumed it would take us a few hours longer with gas stops, breaks, & whatnot, putting us there sometime early Saturday, if we don't stop to sleep. My MIL called last night asking when we would arrive, we said prob not till early Saturday morning & she proceeds to go on about how HER dogs need someone to feed them Friday night and we're just like ...."well.. you know, we can't guarantee we'll be there in time to do that for you" and she then goes "well it's only 16 hours" and I'm like really?? We called her a couple weeks ago, seeing if we can bring our 2 dogs along with us so we don't have to pay for a sitter & they(my father in law) said no. Even though he has a huge backward with 2 seperate kennels we can seperate their dog & our dogs with. So I'm getting annoyed as she continues to keep telling my husband that now she'll have to figure something else out, as she leaves for my Sister-in law's weddding Friday morning(we can't make it cause it's another 8-9 hours away) and so I told him to tell her sorry, but we're not gonna rush ourself there just to feed her dogs. She seriously makes it impossible to like her sometimes.