At home ipl hair removal side effect

I recently got the at home ipl mlay t4. I was using it a week ago while my sister was in the room without any eye safety goggles. I thought that if she was not looking at the light that she is safe. But I read somewhere that everyone in the room should be wearing goggles. She hasn't said that she is hurt or anything. But if anybody knows about these devices, please tell me if they are safe as I can't stop overthinking. Thanks.