I said the words "French kiss" into her app. It replied "Beijo francês". Then she nodded with understanding.
That's definitely Portuguese, so Brazilian, not Czech!

Well done to OP for walking because of uncommunicated extras, it's hard to do when you've got a hottie in front of you, but if it didn't feel right, you would only regret it afterwards.
Deserved negative for pimp's shitty text afterwards.