Food poisining

Yesterday I took my mom out for lunch, the reef Hotel had a Friday chisa nyama special my mom had that and I had their lamb stew butternut and spinach. What made me raise brows is that my stew was warm to cold I had to get the waiter to warm it up for me. Me and my mom shared the stew as she also wanted to taste we had no other filling meal as this was a late lunch. The following day both our tummy where running like mad. Should be food served at 82 degrees to prevent food positioning? Im very dissapointed and worse it was my mom's first experience there.