Hey, there's also theoretically a chance that an asteriod we haven't seen could hit the Earth in an hour. In other words, yes it is POSSIBLE, but common sense would say no. She literally put a finger in her mouth and bit. That is what makes it unbelievable.
*Example*
I'm eating a bowl of Spaghetti O's. I'm watching TV, put the spoon in my mouth - yet somehow a finger is in my O's. I don't eat normally with my mouth in a big O shape. So unless I'm eating like a fish sucking water, I would at least feel this large (not saying it was large - but in comparison to the O's) object either on my lips, tongue, etc. due to the fact that I don't eat like I'm singing opera.
You try putting an object the size of what she had in her chili and see if you can get it in your mouth without looking and not noticing before biting. And most people always take a glance at what they're eating when they put in a utensil. Very rarely does someone read a newspaper ENTIRELY without taking the eyes off their paper.
Have you even had Wendy's chili? It's not like this chunky chili but very liquidity. If Wendy's chili was chunky, it'd be more believable. But what do you expect for $0.99.
Common sense would also say she would have an eye on her spoon to make sure none drips and gets on her - due to the fact that it's liquidity and can spill.