thank goodness you found her in time and dislodged it , I performed that same thing on my mother one fine day in a food establishment, she somehow got a large pc of her salad stuck in there and it was frightening to all of us .
forgot about it until i read this post , it was nearly 25 years ago though and it brought the memory back in a blink ,by the time management reacted to the situation and asked if we needed an ambulance it would have been far to late .