Miyah wrote:
I recently threw a party at my home and invited a lot of people to come, including my co-workers. One of these co-workers had told me that she was going to come with her husband but never showed up. So, went to work today, and asked her what happened. Her story was,
"See, what happened was, we were going to come but we just kept driving and ended up going to the mountains and went gambling." She later told me that she was too upset to come and went to the casino due to her her grandmother being in the hospital and needing a ride in her husband's car.
Does that sound a little fishy to you?
Yeah, that's quite an elaborate answer for a simple question. She'd make a decent novelist...

Most people would just answer "sorry I couldn't make it, something came up". Though it depends on how you asked her. Maybe you sounded really demanding and pissed off, and put her on defense mode? I don't know, but I wouldn't worry about it. It's just a party, people show up if they can/want to. Next time, just lightly kid around that they missed out and briefly share with them something crazy or funny that happened.