I think next week it'll just be her and a dog she's known since puppyhood, so that will eliminate the stress variable. The property is fenced and chemical-free.It does seem to echo the pattern of a few weeks ago. I assume you weren't anywhere that could have been treated with chemicals this time? The play date alone may have been exciting enough after so many weeks of enforced social distancing, of course, even without the added stressor of a yappy dog. Would it be possible to set up a one-to-one playdate with a dog she knows and likes at the same venue, and see how she is after that?
When we first brought her home from the breeder, she vomited the first few days. I assumed it was the food she was on, but maybe she does have a more emotionally sensitive stomach than I thought. Would be very poodle of her!