No, it doesn't. It does seem weird (and a bit rude) to have a regular flow of conversation, and then it just cuts off. Hmmmmm.
Remain confident in the price you gave. If she asked what you wanted, and you told her, and it was reasonable for the time & distance & effort involved... well, it's on her if she's pissed off or insulted ~ not you.
I suppose you could give the benefit of the doubt... maybe something came up that she had to leave. I know here, recently, we've had a WWII vet uncle who suddenly needed to go to the hospital, after he fell & broke his hip. I've also had something come up with one of my dogs where they needed to go to the vet ~ and my dogs are like my family, too.
Or, maybe some other disaster like the toilet overflowing all over the house. Something.
Practitioner of the Nerdly Arts.