Oh dear, I'm not pg and I would be totally upset by this!! My DD is looked after by one of my best gfs and her nanny throughout the week and I know they would never do this with her. Likewise when I am minding my gfs DS for the day.

I would make a complaint to the manager. Right away and in writing. And if you're not satisfied with the response, I'd be looking for another childcare centre. In fact, I'd probably be looking anyway, just in case I didn't like the response. I think your instincts as a Mum are spot on. How does Leah behave towards the teacher in question?