Help. Freaking out

My youngest is 1. I live with my parents and i was in the bathroom my mom is sick in bed and my dad was in the bedroom. He very religious so he reads every night. Anyways he left his pills on the counter. I've told him plenty of times he csnt do thst. Well while i was in the bathroom she got this stool and tooj his pills!!!!! Luckily i came out in time and she only ate one which was saw Palomino. She ate the powder out of it,it looked like. Will she be fine? Should I be worried