NWR: is this bad??

so, i'm a speech therapist at a school district. there are 5 schools in the district, so i only really know the therapists that work at the 2 schools i work at.....
so, one of the therapists at the other school that i've only met like twice, is having a baby and her last day of work is coming up. so, one of the spech people organized us to go out to dinner tonight right after work, as like a 'mini shower'. i said i would go even though i don't really know the mom-to-be, i just figured it would be a night out....
but, today the weather is soo nice!!! i was out at lunch, and all i could think was that i just wanted to go home and take my dog for a walk and get outside! is it bad that i want to come up wtih an excuse not to go to the dinner tonight, so i can go home and spend some time outside?? LOL feel free to help me with excuses!

Maybe you can go, but just for a little while.....but you would still have to make up an excuse on why your leaving early...i'll keep thinking.

lol- thanks!